#428EDE#428EDE

#428EDE is a light, vivid cyan. Relative luminance 0.258; OKLCH L 63.6% C 0.142 H 252.0°. Best body text is #000000 at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#428EDE
RGB	rgb(66, 142, 222)
HSL	hsl(211, 70%, 56%)
HSV	hsv(211, 70%, 87%)
CMYK	cmyk(70.3%, 36%, 0%, 12.9%)
CIE-LAB	lab(57.82, 2.58, -47.56)
CIE-LCH	lch(57.82, 47.63, 273.11°)
OKLab	oklab(63.63% -0.0439 -0.1352)
OKLCH	oklch(63.63% 0.142 252)
XYZ	xyz(25.0997, 25.7755, 72.7454)
Luminance	0.2578 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EDE #DE9242

analogous

#42DCDE #428EDE #4442DE

triadic

#428EDE #DE428E #8EDE42

tetradic

#428EDE #DE42DC #DE9242 #42DE44

square

#428EDE #DE42DC #DE9242 #42DE44

split-complementary

#428EDE #DE4442 #DCDE42

monochromatic

#19518D #226FC1 #428EDE #76ADE7 #AACCF0

Accessibility & contrast

On white

3.41

#428EDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.16

#428EDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EDE

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EDE	#FFFFFF	#000000	##000000
##428EDE	1.00	3.41	6.16	6.16
#FFFFFF	3.41	1.00	21.00	21.00
#000000	6.16	21.00	1.00	1.00
##000000	6.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A93E1

Deuteranopia (green-blind)

#5384DC

Tritanopia (blue-blind)

#00A1AB

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #428ede;
/* rgb */ color: rgb(66, 142, 222);
/* oklch */ color: oklch(63.6% 0.142 252.0);

Tailwind

colors: {
  custom: {
    50: '#88aee8',
    500: '#428ede',
    950: '#000000',
  },
}

SCSS

$custom: #428ede;
$custom-light: #88aee8;
$custom-dark: #000000;

JSON

{
  "hex": "#428ede",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 222
  },
  "hsl": {
    "h": 210.769,
    "s": 70.27,
    "l": 56.471
  },
  "oklch": {
    "l": 0.63633,
    "c": 0.14219,
    "h": 252
  },
  "luminance": 0.25778
}

Semantic roles & 50–950 ramp

primary

#428EDE

secondary

#DEBF9E

accent

#963BED

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428EDE

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

Preview Lab → · Contrast checker → · Palette generator →