#428FAD#428FAD

#428FAD is a mid, moderate cyan. Relative luminance 0.238; OKLCH L 61.4% C 0.088 H 226.5°. Best body text is #000000 at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#428FAD
RGB	rgb(66, 143, 173)
HSL	hsl(197, 45%, 47%)
HSV	hsv(197, 62%, 68%)
CMYK	cmyk(61.8%, 17.3%, 0%, 32.2%)
CIE-LAB	lab(55.91, -14.49, -22.86)
CIE-LCH	lch(55.91, 27.07, 237.63°)
OKLab	oklab(61.39% -0.0605 -0.0638)
OKLCH	oklch(61.39% 0.088 226.5)
XYZ	xyz(19.6091, 23.8183, 43.0911)
Luminance	0.2382 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FAD #AD6042

analogous

#42AD96 #428FAD #425AAD

triadic

#428FAD #AD428F #8FAD42

tetradic

#428FAD #9642AD #AD6042 #5AAD42

square

#428FAD #9642AD #AD6042 #5AAD42

split-complementary

#428FAD #AD425A #AD9642

monochromatic

#204654 #316A81 #428FAD #67ABC5 #93C3D6

Accessibility & contrast

On white

3.64

#428FAD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.76

#428FAD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FAD

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FAD	#FFFFFF	#000000	##000000
##428FAD	1.00	3.64	5.76	5.76
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.76	21.00	1.00	1.00
##000000	5.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8CAF

Deuteranopia (green-blind)

#7081AD

Tritanopia (blue-blind)

#009899

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #428fad;
/* rgb */ color: rgb(66, 143, 173);
/* oklch */ color: oklch(61.4% 0.088 226.5);

Tailwind

colors: {
  custom: {
    50: '#81afc5',
    500: '#428fad',
    950: '#000000',
  },
}

SCSS

$custom: #428fad;
$custom-light: #81afc5;
$custom-dark: #000000;

JSON

{
  "hex": "#428fad",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 173
  },
  "hsl": {
    "h": 196.822,
    "s": 44.77,
    "l": 46.863
  },
  "oklch": {
    "l": 0.61391,
    "c": 0.08789,
    "h": 226.5
  },
  "luminance": 0.2382
}

Semantic roles & 50–950 ramp

primary

#428FAD

secondary

#C19989

accent

#7853D4

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428FAD

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

Preview Lab → · Contrast checker → · Palette generator →