Irodori彩り

#0EA5E9 Vivid Cyan

Generate color codes, variations, harmonies and check contrast.

Color conversion

#0EA5E9Vivid Cyan

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

At a glance

NameVivid Cyan
RomanizationVivid Cyan
Traditiondigital color
FamilyBlue
HEX#0EA5E9
RGBrgb(14,165,233)
HSLhsl(199 89% 48%)
HSVhsv(199, 94%, 91%)
OKLCHoklch(0.685 0.148 237.3)
LABlab(64.07 -11.09 -43.86)
XYZ28,33,82
CMYKcmyk(94.0% 29.2% 0.0% 8.6%)
RAL#48A43F · Yellow green · RAL 6018

About this color

Vivid CyanBluedigital color

Calm that earns trust

Vivid Cyan is #0EA5E9, a Blue tone with a clear cultural lineage. Read on its own it belongs to the Blue family; read through its digital color roots, it carries a second layer of meaning.

Design tip

Test Vivid Cyan (#0EA5E9) on a neutral surface first; a Blue accent then looks intentional rather than decorative.

Best use

Give Vivid Cyan the single element that must be noticed first, and let the rest of the Blue palette support it.

calmtrustworthytechnicalsteadycool

Psychology

How it is perceived

calmtrustworthytechnicalsteadycool

Psychological effect

Vivid Cyan raises the perceived energy of a Blue 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

trustcompetence and clarity

Cultural significance

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

Positive associations

Positive associations lean toward trust, competence and clarity, which is why it appears in invitations and seasonal work.

Use with care

Too much surface area can read as coldness or distance in excess, so keep it to accents and small fields.

Where it appears

Common design applications

Campaign landing pages
Give Vivid Cyan the single element that must be noticed first, and let the rest of the Blue palette support it.
Editorial cover systems
Give Vivid Cyan the single element that must be noticed first, and let the rest of the Blue palette support it.
Product packaging labels
Give Vivid Cyan the single element that must be noticed first, and let the rest of the Blue palette support it.
Dashboard status accents
Give Vivid Cyan the single element that must be noticed first, and let the rest of the Blue palette support it.
Retail wayfinding signs
Give Vivid Cyan the single element that must be noticed first, and let the rest of the Blue 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
finance, technology, healthcare, aviation

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

Trend signal
Calm that earns trust

Blue recedes and steadies, which makes it the default for interfaces and institutions. Its range runs from near-black navy to pale sky without ever losing composure.

History

Pigments and provenance

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

Tags

calmtrustworthytechnicalsteadycooltrustcompetence and clarityBlue

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): #0084C6 · 4.59:1

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

浅葱 JP ΔE 0.051
สีเขียว TH ΔE 0.061
碧 KR ΔE 0.067
Show all (6)
Ягаан MN ΔE 0.070
金 TB ΔE 0.073
हरा IN ΔE 0.075
琥珀 CN ΔE 0.081
Emas ID ΔE 0.090
Xanh VN ΔE 0.181

Design systems

Sky 500 UnoCSS ΔE 0.000
Sky 500 Panda ΔE 0.000
Web 100 Fluent ΔE 0.006
Show all (11)
Sky 500 Tailwind ΔE 0.014
Indigo 400 Open Color ΔE 0.018
Blue 400 Chakra ΔE 0.025
Blue 5 Ant Design ΔE 0.031
Primary 60 Material ΔE 0.032
Cyan 9 Radix ΔE 0.036
Green 10 Polaris ΔE 0.049
Teal Bootstrap ΔE 0.066
Neutral muted Primer ΔE 0.136
Secondary StyleX ΔE 0.172
Brand (contract) vanilla-extract ΔE 0.199

RAL Classic

Yellow green · RAL 6018 RAL ΔE 0.071
Try any color

Can three steps of one hue work together

Three steps from the 50–950 scale of “Vivid Cyan”: same hue, only lightness differs. Below is the contrast whenever one of them is text on another.

200#9AE3FF
500#0095D8
800#004C7D
  • 200 ↔ 500: 2.35:1 (FAIL)
  • 500 ↔ 800: 2.70:1 (FAIL)
  • 200 ↔ 800: 6.35:1 (AA)

Pairs reaching 4.5:1 (AA body text): 1 of 3. Pairs reaching 3:1 (large text, icons, borders): 1 of 3. The rest fall below 3:1 and should not carry text.

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.

All six palettes rotate hue at similar lightness, so the best in-group contrast falls between 1.01:1 and 1.80:1. Use them for fills, charts and graphics rather than as text on each other — when you need text, use a neutral or a darker step of the same scale.

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: #DCFAFF;
  --brand-100: #C4F4FF;
  --brand-200: #9AE3FF;
  --brand-300: #6ECEFF;
  --brand-400: #3EB5F5;
  --brand-500: #0095D8;
  --brand-600: #007CBC;
  --brand-700: #00649D;
  --brand-800: #004C7D;
  --brand-900: #00365C;
  --brand-950: #00243F;
}

Tailwind

theme: {
  extend: {
    colors: {
      brand: {
        50: '#DCFAFF',
        100: '#C4F4FF',
        200: '#9AE3FF',
        300: '#6ECEFF',
        400: '#3EB5F5',
        500: '#0095D8',
        600: '#007CBC',
        700: '#00649D',
        800: '#004C7D',
        900: '#00365C',
        950: '#00243F',
      },
    },
  },
}

Figma

{
  "brand": {
    "50": {
      "$type": "color",
      "$value": "#DCFAFF"
    },
    "100": {
      "$type": "color",
      "$value": "#C4F4FF"
    },
    "200": {
      "$type": "color",
      "$value": "#9AE3FF"
    },
    "300": {
      "$type": "color",
      "$value": "#6ECEFF"
    },
    "400": {
      "$type": "color",
      "$value": "#3EB5F5"
    },
    "500": {
      "$type": "color",
      "$value": "#0095D8"
    },
    "600": {
      "$type": "color",
      "$value": "#007CBC"
    },
    "700": {
      "$type": "color",
      "$value": "#00649D"
    },
    "800": {
      "$type": "color",
      "$value": "#004C7D"
    },
    "900": {
      "$type": "color",
      "$value": "#00365C"
    },
    "950": {
      "$type": "color",
      "$value": "#00243F"
    }
  }
}

SVG

<svg xmlns="http://www.w3.org/2000/svg" width="1100" height="120">
  <rect x="0" y="0" width="100" height="90" fill="#DCFAFF"/>
  <rect x="100" y="0" width="100" height="90" fill="#C4F4FF"/>
  <rect x="200" y="0" width="100" height="90" fill="#9AE3FF"/>
  <rect x="300" y="0" width="100" height="90" fill="#6ECEFF"/>
  <rect x="400" y="0" width="100" height="90" fill="#3EB5F5"/>
  <rect x="500" y="0" width="100" height="90" fill="#0095D8"/>
  <rect x="600" y="0" width="100" height="90" fill="#007CBC"/>
  <rect x="700" y="0" width="100" height="90" fill="#00649D"/>
  <rect x="800" y="0" width="100" height="90" fill="#004C7D"/>
  <rect x="900" y="0" width="100" height="90" fill="#00365C"/>
  <rect x="1000" y="0" width="100" height="90" fill="#00243F"/>
  <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: 0.863, green: 0.980, blue: 1.000, alpha: 1.0)
  static let brand100 = UIColor(red: 0.769, green: 0.957, blue: 1.000, alpha: 1.0)
  static let brand200 = UIColor(red: 0.604, green: 0.890, blue: 1.000, alpha: 1.0)
  static let brand300 = UIColor(red: 0.431, green: 0.808, blue: 1.000, alpha: 1.0)
  static let brand400 = UIColor(red: 0.243, green: 0.710, blue: 0.961, alpha: 1.0)
  static let brand500 = UIColor(red: 0.000, green: 0.584, blue: 0.847, alpha: 1.0)
  static let brand600 = UIColor(red: 0.000, green: 0.486, blue: 0.737, alpha: 1.0)
  static let brand700 = UIColor(red: 0.000, green: 0.392, blue: 0.616, alpha: 1.0)
  static let brand800 = UIColor(red: 0.000, green: 0.298, blue: 0.490, alpha: 1.0)
  static let brand900 = UIColor(red: 0.000, green: 0.212, blue: 0.361, alpha: 1.0)
  static let brand950 = UIColor(red: 0.000, green: 0.141, blue: 0.247, alpha: 1.0)
}

Android

<resources>
  <color name="brand_50">#DCFAFF</color>
  <color name="brand_100">#C4F4FF</color>
  <color name="brand_200">#9AE3FF</color>
  <color name="brand_300">#6ECEFF</color>
  <color name="brand_400">#3EB5F5</color>
  <color name="brand_500">#0095D8</color>
  <color name="brand_600">#007CBC</color>
  <color name="brand_700">#00649D</color>
  <color name="brand_800">#004C7D</color>
  <color name="brand_900">#00365C</color>
  <color name="brand_950">#00243F</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.

2.77 :1
FAIL
Quote

Give Vivid Cyan the single element that must be noticed first, and let the rest of the Blue palette support it.

WCAG contrast
Preview
Aa / Bb
#0EA5E9 · Vivid Cyan

WCAG contrast standards

WCAG 2.2 sets minimum contrast for text and interface parts. #0EA5E9 measures 2.77:1 against white (FAIL) and 6.81:1 against black (AA). 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
#0EA5E9

CSS Color 4

RGB
14,165,233

sRGB / D65

HSL
199,89,48

HSL

OKLCH
oklch(0.685 0.148 237.3)

perceptual

LAB
64,-11,-44

CIE Lab

LCH
64,45,256

CIE LCH

XYZ
28,33,82

CIE XYZ

LUV
64,-42,-69

CIE LUV

HWB
199,5,9

CSS HWB

CMYK
94,29,0,9

print

Practical formats

Ready-to-use values

CSS
color: #0EA5E9;

custom properties

Tailwind
bg-[#0EA5E9] text-[#FFF]

arbitrary value

Android
#FF0EA5E9

ARGB

Flutter
Color(0xFF0EA5E9)

dart:ui

Photoshop
R 14 G 165 B 233 · C 94 M 29 Y 0 K 9

RGB / CMYK

Print
CMYK 94,29,0,9

FOGRA39

Color analysis

Measured color properties

Lightness
0.329

relative luminance · cool

Contrast
2.77 : 1

vs white · FAIL · cool

Contrast
6.81 : 1

vs black · AA · cool

Hue
199°

saturation 89% · cool

LCH
64,45,256

lightness 48% · cool

Delta E
35.4

天青 #A9D1E3 · cool

Blindness simulator

How it reads with color vision deficiency

How it reads with color vision deficiency · ΔE 35.4

Creative aspects

Culture, mood and story

Mood
calm, trustworthy, technical, steady, cool

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

Family
Blue · oklch(0.685 0.148 237.3)

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
Calm that earns trust

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 #0EA5E9?
Vivid Cyan is #0EA5E9, or #0EA5E9 in uppercase notation. In RGB it is rgb(14,165,233), in HSL about hsl(199 89% 48%), and in OKLCH oklch(0.685 0.148 237.3).
How should I use Vivid Cyan in design?
Give it one focal element, keep body copy neutral and confirm contrast at 2.77 against white and 6.81 against black.
Is Vivid Cyan accessible?
Contrast is 2.77 against white (FAIL) and 6.81 against black (AA). Use it for large text when the level reaches AA.