#428CA9#428CA9

#428CA9 is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.5% C 0.085 H 226.5°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#428CA9
RGB	rgb(66, 140, 169)
HSL	hsl(197, 44%, 46%)
HSV	hsv(197, 61%, 66%)
CMYK	cmyk(60.9%, 17.2%, 0%, 33.7%)
CIE-LAB	lab(54.84, -14.11, -22.21)
CIE-LCH	lch(54.84, 26.31, 237.56°)
OKLab	oklab(60.49% -0.0587 -0.0619)
OKLCH	oklch(60.49% 0.085 226.5)
XYZ	xyz(18.7835, 22.7771, 40.9350)
Luminance	0.2278 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CA9 #A95F42

analogous

#42A992 #428CA9 #4258A9

triadic

#428CA9 #A9428C #8CA942

tetradic

#428CA9 #9242A9 #A95F42 #58A942

square

#428CA9 #9242A9 #A95F42 #58A942

split-complementary

#428CA9 #A94258 #A99242

monochromatic

#204351 #31687D #428CA9 #65A9C3 #91C1D4

Accessibility & contrast

On white

3.78

#428CA9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#428CA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CA9

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CA9	#FFFFFF	#000000	##000000
##428CA9	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C89AA

Deuteranopia (green-blind)

#6E7FA9

Tritanopia (blue-blind)

#009595

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428ca9;
/* rgb */ color: rgb(66, 140, 169);
/* oklch */ color: oklch(60.5% 0.085 226.5);

Tailwind

colors: {
  custom: {
    50: '#80adc2',
    500: '#428ca9',
    950: '#000000',
  },
}

SCSS

$custom: #428ca9;
$custom-light: #80adc2;
$custom-dark: #000000;

JSON

{
  "hex": "#428ca9",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 169
  },
  "hsl": {
    "h": 196.893,
    "s": 43.83,
    "l": 46.078
  },
  "oklch": {
    "l": 0.6049,
    "c": 0.0853,
    "h": 226.5
  },
  "luminance": 0.22779
}

Semantic roles & 50–950 ramp

primary

#428CA9

secondary

#C09787

accent

#7854D4

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428CA9

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

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