#428FE2#428FE2

#428FE2 is a light, vivid cyan. Relative luminance 0.263; OKLCH L 64.1% C 0.146 H 252.6°. Best body text is #000000 at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#428FE2
RGB	rgb(66, 143, 226)
HSL	hsl(211, 73%, 57%)
HSV	hsv(211, 71%, 89%)
CMYK	cmyk(70.8%, 36.7%, 0%, 11.4%)
CIE-LAB	lab(58.31, 3.39, -49.02)
CIE-LCH	lch(58.31, 49.13, 273.96°)
OKLab	oklab(64.08% -0.0438 -0.1395)
OKLCH	oklch(64.08% 0.146 252.6)
XYZ	xyz(25.7916, 26.2913, 75.6522)
Luminance	0.2629 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FE2 #E29542

analogous

#42DFE2 #428FE2 #4542E2

triadic

#428FE2 #E2428F #8FE242

tetradic

#428FE2 #E242DF #E29542 #42E245

square

#428FE2 #E242DF #E29542 #42E245

split-complementary

#428FE2 #E24542 #DFE242

monochromatic

#175293 #1F70C8 #428FE2 #77AEEA #ACCEF2

Accessibility & contrast

On white

3.36

#428FE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.26

#428FE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FE2

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FE2	#FFFFFF	#000000	##000000
##428FE2	1.00	3.36	6.26	6.26
#FFFFFF	3.36	1.00	21.00	21.00
#000000	6.26	21.00	1.00	1.00
##000000	6.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6994E5

Deuteranopia (green-blind)

#5185E0

Tritanopia (blue-blind)

#00A2AE

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #428fe2;
/* rgb */ color: rgb(66, 143, 226);
/* oklch */ color: oklch(64.1% 0.146 252.6);

Tailwind

colors: {
  custom: {
    50: '#89afeb',
    500: '#428fe2',
    950: '#000000',
  },
}

SCSS

$custom: #428fe2;
$custom-light: #89afeb;
$custom-dark: #000000;

JSON

{
  "hex": "#428fe2",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 226
  },
  "hsl": {
    "h": 211.125,
    "s": 73.394,
    "l": 57.255
  },
  "oklch": {
    "l": 0.64083,
    "c": 0.14622,
    "h": 252.6
  },
  "luminance": 0.26294
}

Semantic roles & 50–950 ramp

primary

#428FE2

secondary

#E0C19F

accent

#9738F0

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428FE2

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

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