#428EEA#428EEA

#428EEA is a light, vivid cyan. Relative luminance 0.264; OKLCH L 64.3% C 0.157 H 254.9°. Best body text is #000000 at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#428EEA
RGB	rgb(66, 142, 234)
HSL	hsl(213, 80%, 59%)
HSV	hsv(213, 72%, 92%)
CMYK	cmyk(71.8%, 39.3%, 0%, 8.2%)
CIE-LAB	lab(58.45, 6.81, -53.24)
CIE-LCH	lch(58.45, 53.67, 277.29°)
OKLab	oklab(64.33% -0.0411 -0.1519)
OKLCH	oklch(64.33% 0.157 254.9)
XYZ	xyz(26.7656, 26.4418, 81.5191)
Luminance	0.2645 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EEA #EA9E42

analogous

#42E2EA #428EEA #4A42EA

triadic

#428EEA #EA428E #8EEA42

tetradic

#428EEA #EA42E2 #EA9E42 #42EA4A

square

#428EEA #EA42E2 #EA9E42 #42EA4A

split-complementary

#428EEA #EA4A42 #E2EA42

monochromatic

#1252A0 #186ED7 #428EEA #79AFF0 #B0D0F6

Accessibility & contrast

On white

3.34

#428EEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.29

#428EEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EEA

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EEA	#FFFFFF	#000000	##000000
##428EEA	1.00	3.34	6.29	6.29
#FFFFFF	3.34	1.00	21.00	21.00
#000000	6.29	21.00	1.00	1.00
##000000	6.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6395EE

Deuteranopia (green-blind)

#4885E8

Tritanopia (blue-blind)

#00A4B1

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #428eea;
/* rgb */ color: rgb(66, 142, 234);
/* oklch */ color: oklch(64.3% 0.157 254.9);

Tailwind

colors: {
  custom: {
    50: '#8aaef1',
    500: '#428eea',
    950: '#000000',
  },
}

SCSS

$custom: #428eea;
$custom-light: #8aaef1;
$custom-dark: #000000;

JSON

{
  "hex": "#428eea",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 234
  },
  "hsl": {
    "h": 212.857,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.64331,
    "c": 0.15733,
    "h": 254.9
  },
  "luminance": 0.26445
}

Semantic roles & 50–950 ramp

primary

#428EEA

secondary

#E5C7A3

accent

#9D31F6

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D1017

muted

#7E7F85

Preview Lab

Preview with #428EEA

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →