#428CA8#428CA8

#428CA8 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.4% C 0.085 H 225.6°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#428CA8
RGB	rgb(66, 140, 168)
HSL	hsl(196, 44%, 46%)
HSV	hsv(196, 61%, 66%)
CMYK	cmyk(60.7%, 16.7%, 0%, 34.1%)
CIE-LAB	lab(54.80, -14.43, -21.69)
CIE-LCH	lch(54.80, 26.05, 236.36°)
OKLab	oklab(60.45% -0.0591 -0.0604)
OKLCH	oklch(60.45% 0.085 225.6)
XYZ	xyz(18.6900, 22.7397, 40.4424)
Luminance	0.2274 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CA8 #A85E42

analogous

#42A891 #428CA8 #4259A8

triadic

#428CA8 #A8428C #8CA842

tetradic

#428CA8 #9142A8 #A85E42 #59A842

square

#428CA8 #9142A8 #A85E42 #59A842

split-complementary

#428CA8 #A84259 #A89142

monochromatic

#1F4350 #31677C #428CA8 #65A9C2 #91C1D4

Accessibility & contrast

On white

3.78

#428CA8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#428CA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CA8

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CA8	#FFFFFF	#000000	##000000
##428CA8	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D89A9

Deuteranopia (green-blind)

#6E7EA8

Tritanopia (blue-blind)

#009495

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428ca8;
/* rgb */ color: rgb(66, 140, 168);
/* oklch */ color: oklch(60.4% 0.085 225.6);

Tailwind

colors: {
  custom: {
    50: '#80adc2',
    500: '#428ca8',
    950: '#000000',
  },
}

SCSS

$custom: #428ca8;
$custom-light: #80adc2;
$custom-dark: #000000;

JSON

{
  "hex": "#428ca8",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 168
  },
  "hsl": {
    "h": 196.471,
    "s": 43.59,
    "l": 45.882
  },
  "oklch": {
    "l": 0.60447,
    "c": 0.08452,
    "h": 225.6
  },
  "luminance": 0.22742
}

Semantic roles & 50–950 ramp

primary

#428CA8

secondary

#BF9687

accent

#7754D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428CA8

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

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