Irodori彩り

#37331F Dark Yellow

Generate color codes, variations, harmonies and check contrast.

Color conversion

#37331FDark Yellow

CMYK profile: Coated FOGRA39 · Formats follow CSS Color 4 naming and WCAG 2.2 contrast rules.

At a glance

NameDark Yellow
RomanizationDark Yellow
Traditiondigital color
FamilyYellow
HEX#37331F
RGBrgb(55,51,31)
HSLhsl(50 28% 17%)
HSVhsv(50, 44%, 22%)
OKLCHoklch(0.319 0.033 98.3)
LABlab(21.13 -1.90 13.34)
XYZ3,3,2
CMYKcmyk(0.0% 7.3% 43.6% 78.4%)
RAL#26392F · Fir green · RAL 6009

About this color

Dark YellowYellowdigital color

Optimism under a spotlight

Dark Yellow is #37331F, a Yellow tone with a clear cultural lineage. Read on its own it belongs to the Yellow family; read through its digital color roots, it carries a second layer of meaning.

Design tip

Test Dark Yellow (#37331F) on a neutral surface first; a Yellow accent then looks intentional rather than decorative.

Best use

Give Dark Yellow the single element that must be noticed first, and let the rest of the Yellow palette support it.

optimisticbrightalertyouthfulcautious

Psychology

How it is perceived

optimisticbrightalertyouthfulcautious

Psychological effect

Dark Yellow raises the perceived energy of a Yellow composition and pulls the eye toward action.

Emotional impact

It feels immediate and warm, so it can lift a restrained layout without making it loud.

Symbolism

What it stands for

hopeclarity and playful confidence

Cultural significance

In digital color settings the shade carries local references, so verify its symbolism before a campaign.

Positive associations

Positive associations lean toward hope, clarity and playful confidence, which is why it appears in invitations and seasonal work.

Use with care

Too much surface area can read as anxiety or hazard when too loud, so keep it to accents and small fields.

Where it appears

Common design applications

Campaign landing pages
Give Dark Yellow the single element that must be noticed first, and let the rest of the Yellow palette support it.
Editorial cover systems
Give Dark Yellow the single element that must be noticed first, and let the rest of the Yellow palette support it.
Product packaging labels
Give Dark Yellow the single element that must be noticed first, and let the rest of the Yellow palette support it.
Dashboard status accents
Give Dark Yellow the single element that must be noticed first, and let the rest of the Yellow palette support it.
Retail wayfinding signs
Give Dark Yellow the single element that must be noticed first, and let the rest of the Yellow palette support it.

Design guidance

How to make it work

Do

  • Keep saturated fills below about twenty percent of the layout.
  • Use it for the primary call to action and nothing else.
  • Check the pairing at small sizes on a neutral background.

Avoid

  • Do not place it beside clashing neon greens or electric blues.
  • Never use it for long body text on white.
  • Avoid gradients that shift its hue into another family.
Brand fit
logistics, food, leisure, safety

Brands built on The Innocent, The Explorer use it to signal character before they say a word.

Trend signal
Optimism under a spotlight

Yellow is the brightest hue the eye can resolve, so it attracts attention before form is read. Pale versions feel sunny; saturated ones behave like a warning sign.

History

Pigments and provenance

Before synthetic dyes, Dark Yellow was matched with mineral and plant pigments, and the Yellow family depended on sources such as ochre, madder and indigo. Screens now reproduce it more consistently than any single pigment ever could.

Tags

optimisticbrightalertyouthfulcautioushopeclarity and playful confidenceYellow

Variations

Shades darken and tints lighten while the hue angle stays fixed.

Pro tip: Shades darken and tints lighten while the hue angle stays fixed.
Dark-mode value (AA): #827E67 · 4.60:1

Use cases

  • Shades → hover, shadows, depth
  • Tints → highlights, surfaces
  • Balance → consistent color systems

Design tip

Keep one dominant tone, one supporter and one accent.

Across color systems

The closest named color in each tradition and design system, measured in OKLCH ΔE. Lower means closer.

Asian color traditions

Coklat ID ΔE 0.019
玄色 CN ΔE 0.039
焦茶 JP ΔE 0.054
Show all (6)
Хар MN ΔE 0.056
藏蓝 TB ΔE 0.071
黯 KR ΔE 0.079
Đen VN ΔE 0.107
नील IN ΔE 0.135
สีคราม TH ΔE 0.156

Design systems

Secondary 20 Material ΔE 0.009
Jade 12 Radix ΔE 0.010
Teams 20 Fluent ΔE 0.016
Show all (11)
Gray 700 Chakra ΔE 0.016
Teal 15 Polaris ΔE 0.021
Cyan 950 UnoCSS ΔE 0.028
Cyan 950 Panda ΔE 0.028
Cyan 950 Tailwind ΔE 0.030
Gray 800 Bootstrap ΔE 0.033
Gray 800 Open Color ΔE 0.033
Cyan 9 Ant Design ΔE 0.054
Foreground Primer ΔE 0.069
Secondary StyleX ΔE 0.282
Brand (default) vanilla-extract ΔE 0.332

RAL Classic

Fir green · RAL 6009 RAL ΔE 0.006
Try any color

Color combinations

Rotate the hue wheel while holding lightness steady.

How to use it

Three moves keep the color readable and deliberate.

Why it works

The perceptual reasoning behind the palette.

Complementary

Opposite the hue wheel; it sharpens the focal color by contrast.

Best use: Calls to action and single-feature highlights

Split-complementary

Two neighbors of the opposite hue; softer than a direct complement.

Best use: Balanced marketing layouts with two accents

Triadic

Three hues spaced evenly; lively but needs one dominant voice.

Best use: Event identities and playful editorial spreads

Analogous

Neighbors on the wheel; quiet, cohesive and easy to scan.

Best use: Backgrounds, charts and calm product pages

Monochromatic

One hue across lightness steps; disciplined and premium.

Best use: Design systems, packaging and typographic hierarchy

Tetradic

Two complementary pairs; rich, but requires strict proportion.

Best use: Complex dashboards and multi-service brands

Export the scale

CSS

:root {
  --brand-50: #F7F6EF;
  --brand-100: #EFEDE2;
  --brand-200: #DDDAC9;
  --brand-300: #C7C3AF;
  --brand-400: #AEAA94;
  --brand-500: #908B74;
  --brand-600: #78745E;
  --brand-700: #605D49;
  --brand-800: #4A4736;
  --brand-900: #343225;
  --brand-950: #222118;
}

Tailwind

theme: {
  extend: {
    colors: {
      brand: {
        50: '#F7F6EF',
        100: '#EFEDE2',
        200: '#DDDAC9',
        300: '#C7C3AF',
        400: '#AEAA94',
        500: '#908B74',
        600: '#78745E',
        700: '#605D49',
        800: '#4A4736',
        900: '#343225',
        950: '#222118',
      },
    },
  },
}

Figma

{
  "brand": {
    "50": {
      "$type": "color",
      "$value": "#F7F6EF"
    },
    "100": {
      "$type": "color",
      "$value": "#EFEDE2"
    },
    "200": {
      "$type": "color",
      "$value": "#DDDAC9"
    },
    "300": {
      "$type": "color",
      "$value": "#C7C3AF"
    },
    "400": {
      "$type": "color",
      "$value": "#AEAA94"
    },
    "500": {
      "$type": "color",
      "$value": "#908B74"
    },
    "600": {
      "$type": "color",
      "$value": "#78745E"
    },
    "700": {
      "$type": "color",
      "$value": "#605D49"
    },
    "800": {
      "$type": "color",
      "$value": "#4A4736"
    },
    "900": {
      "$type": "color",
      "$value": "#343225"
    },
    "950": {
      "$type": "color",
      "$value": "#222118"
    }
  }
}

SVG

<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="120">
  <rect x="0" y="0" width="100" height="90" fill="#F7F6EF"/>
  <rect x="100" y="0" width="100" height="90" fill="#EFEDE2"/>
  <rect x="200" y="0" width="100" height="90" fill="#DDDAC9"/>
  <rect x="300" y="0" width="100" height="90" fill="#C7C3AF"/>
  <rect x="400" y="0" width="100" height="90" fill="#AEAA94"/>
  <rect x="500" y="0" width="100" height="90" fill="#908B74"/>
  <rect x="600" y="0" width="100" height="90" fill="#78745E"/>
  <rect x="700" y="0" width="100" height="90" fill="#605D49"/>
  <rect x="800" y="0" width="100" height="90" fill="#4A4736"/>
  <rect x="900" y="0" width="100" height="90" fill="#343225"/>
  <rect x="1000" y="0" width="100" height="90" fill="#222118"/>
  <text x="50" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">50</text>
  <text x="150" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">100</text>
  <text x="250" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">200</text>
  <text x="350" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">300</text>
  <text x="450" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">400</text>
  <text x="550" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">500</text>
  <text x="650" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">600</text>
  <text x="750" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">700</text>
  <text x="850" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">800</text>
  <text x="950" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">900</text>
  <text x="1050" y="112" font-family="monospace" font-size="10" text-anchor="middle" fill="#444">950</text>
</svg>

iOS

extension UIColor {
  static let brand50 = UIColor(red: 0.969, green: 0.965, blue: 0.937, alpha: 1.0)
  static let brand100 = UIColor(red: 0.937, green: 0.929, blue: 0.886, alpha: 1.0)
  static let brand200 = UIColor(red: 0.867, green: 0.855, blue: 0.788, alpha: 1.0)
  static let brand300 = UIColor(red: 0.780, green: 0.765, blue: 0.686, alpha: 1.0)
  static let brand400 = UIColor(red: 0.682, green: 0.667, blue: 0.580, alpha: 1.0)
  static let brand500 = UIColor(red: 0.565, green: 0.545, blue: 0.455, alpha: 1.0)
  static let brand600 = UIColor(red: 0.471, green: 0.455, blue: 0.369, alpha: 1.0)
  static let brand700 = UIColor(red: 0.376, green: 0.365, blue: 0.286, alpha: 1.0)
  static let brand800 = UIColor(red: 0.290, green: 0.278, blue: 0.212, alpha: 1.0)
  static let brand900 = UIColor(red: 0.204, green: 0.196, blue: 0.145, alpha: 1.0)
  static let brand950 = UIColor(red: 0.133, green: 0.129, blue: 0.094, alpha: 1.0)
}

Android

<resources>
  <color name="brand_50">#F7F6EF</color>
  <color name="brand_100">#EFEDE2</color>
  <color name="brand_200">#DDDAC9</color>
  <color name="brand_300">#C7C3AF</color>
  <color name="brand_400">#AEAA94</color>
  <color name="brand_500">#908B74</color>
  <color name="brand_600">#78745E</color>
  <color name="brand_700">#605D49</color>
  <color name="brand_800">#4A4736</color>
  <color name="brand_900">#343225</color>
  <color name="brand_950">#222118</color>
</resources>

Principles

Balance

Keep one dominant tone, one supporter and one accent.

Contrast

Test body text against both white and black before shipping.

Harmony

Rotate the hue wheel while holding lightness steady.

Color contrast checker

Test body text against both white and black before shipping.

12.68 :1
AAA
Quote

Give Dark Yellow the single element that must be noticed first, and let the rest of the Yellow palette support it.

WCAG contrast
Preview
Aa / Bb
#37331F · Dark Yellow

WCAG contrast standards

WCAG 2.2 sets minimum contrast for text and interface parts. #37331F measures 12.68:1 against white (AAA) and 1.49:1 against black (FAIL). Use the table below to choose the right threshold for the text size.

LevelNormal textLarge text (18pt+ / 14pt bold)Icons & UI parts
AAA7 : 14.5 : 1—
AA4.5 : 13 : 13 : 1
Fails< 4.5 : 1< 3 : 1< 3 : 1

Large text means 18pt regular or 14pt bold. UI parts need 3:1 against adjacent colors. AA is the common compliance baseline; AAA is enhanced.

Technical formats

Notation across color spaces

HEX
#37331F

CSS Color 4

RGB
55,51,31

sRGB / D65

HSL
50,28,17

HSL

OKLCH
oklch(0.319 0.033 98.3)

perceptual

LAB
21,-2,13

CIE Lab

LCH
21,13,98

CIE LCH

XYZ
3,3,2

CIE XYZ

LUV
21,3,12

CIE LUV

HWB
50,12,78

CSS HWB

CMYK
0,7,44,78

print

Practical formats

Ready-to-use values

CSS
color: #37331F;

custom properties

Tailwind
bg-[#37331F] text-[#FFF]

arbitrary value

Android
#FF37331F

ARGB

Flutter
Color(0xFF37331F)

dart:ui

Photoshop
R 55 G 51 B 31 · C 0 M 7 Y 44 K 78

RGB / CMYK

Print
CMYK 0,7,44,78

FOGRA39

Color analysis

Measured color properties

Lightness
0.033

relative luminance · warm

Contrast
12.68 : 1

vs white · AAA · warm

Contrast
1.49 : 1

vs black · FAIL · warm

Hue
50°

saturation 28% · warm

LCH
21,13,98

lightness 17% · warm

Delta E
17.7

玄色 #3A3A40 · warm

Blindness simulator

How it reads with color vision deficiency

How it reads with color vision deficiency · ΔE 17.7

Creative aspects

Culture, mood and story

Mood
optimistic, bright, alert, youthful, cautious

It is commonly read as energy, warmth, confidence and a trace of ceremony.

Family
Yellow · oklch(0.319 0.033 98.3)

It is commonly read as energy, warmth, confidence and a trace of ceremony.

Usage
Campaign landing pages

It is commonly read as energy, warmth, confidence and a trace of ceremony.

Style
Optimism under a spotlight

It is commonly read as energy, warmth, confidence and a trace of ceremony.

Inspired by
digital color

It is commonly read as energy, warmth, confidence and a trace of ceremony.

Frequently asked questions

What color is #37331F?
Dark Yellow is #37331F, or #37331F in uppercase notation. In RGB it is rgb(55,51,31), in HSL about hsl(50 28% 17%), and in OKLCH oklch(0.319 0.033 98.3).
What does Dark Yellow symbolize?
It usually stands for energy, warmth and confidence, with a ceremonial edge. Local culture can shift that reading, so check the context.
Where is Dark Yellow used?
You will see it in Campaign landing pages, Editorial cover systems, Product packaging labels, Dashboard status accents, Retail wayfinding signs. It also appears across logistics, food, leisure, safety.
Which colors go well with Dark Yellow?
Muted neutrals, deeper steps of the same hue and one metallic accent work well. editorial layouts that need one warm focal point; packaging that should feel appetizing without shouting; interfaces where an accent has to stay legible
How does Dark Yellow affect mood?
It raises perceived energy and draws the eye quickly. Large fields feel intense, so accent use is safer.
Which industries use Dark Yellow?
It is common in logistics, food, leisure, safety, particularly where brands want to feel optimistic, bright, alert, youthful, cautious.
What is the history of Dark Yellow?
The pigment story is concrete: Yellow is the brightest hue the eye can resolve, so it attracts attention before form is read. Pale versions feel sunny; saturated ones behave like a warning sign.
How should I use Dark Yellow in design?
Give it one focal element, keep body copy neutral and confirm contrast at 12.68 against white and 1.49 against black.
Is Dark Yellow accessible?
Contrast is 12.68 against white (AAA) and 1.49 against black (FAIL). Use it for large text when the level reaches AA.