#428FA7#428FA7

#428FA7 is a mid, moderate cyan. Relative luminance 0.236; OKLCH L 61.1% C 0.084 H 221.2°. Best body text is #000000 at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#428FA7
RGB	rgb(66, 143, 167)
HSL	hsl(194, 43%, 46%)
HSV	hsv(194, 60%, 65%)
CMYK	cmyk(60.5%, 14.4%, 0%, 34.5%)
CIE-LAB	lab(55.68, -16.38, -19.78)
CIE-LCH	lch(55.68, 25.68, 230.37°)
OKLab	oklab(61.13% -0.0628 -0.055)
OKLCH	oklch(61.13% 0.084 221.2)
XYZ	xyz(19.0415, 23.5913, 40.1018)
Luminance	0.2359 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FA7 #A75A42

analogous

#42A78C #428FA7 #425CA7

triadic

#428FA7 #A7428F #8FA742

tetradic

#428FA7 #8C42A7 #A75A42 #5CA742

square

#428FA7 #8C42A7 #A75A42 #5CA742

split-complementary

#428FA7 #A7425C #A78C42

monochromatic

#1F444F #31697B #428FA7 #64ACC2 #90C3D3

Accessibility & contrast

On white

3.67

#428FA7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.72

#428FA7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FA7

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FA7	#FFFFFF	#000000	##000000
##428FA7	1.00	3.67	5.72	5.72
#FFFFFF	3.67	1.00	21.00	21.00
#000000	5.72	21.00	1.00	1.00
##000000	5.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#818CA8

Deuteranopia (green-blind)

#7281A7

Tritanopia (blue-blind)

#009797

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428fa7;
/* rgb */ color: rgb(66, 143, 167);
/* oklch */ color: oklch(61.1% 0.084 221.2);

Tailwind

colors: {
  custom: {
    50: '#80b0c1',
    500: '#428fa7',
    950: '#000000',
  },
}

SCSS

$custom: #428fa7;
$custom-light: #80b0c1;
$custom-dark: #000000;

JSON

{
  "hex": "#428fa7",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 167
  },
  "hsl": {
    "h": 194.257,
    "s": 43.348,
    "l": 45.686
  },
  "oklch": {
    "l": 0.61132,
    "c": 0.08351,
    "h": 221.2
  },
  "luminance": 0.23593
}

Semantic roles & 50–950 ramp

primary

#428FA7

secondary

#BE9486

accent

#7355D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428FA7

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

Preview Lab → · Contrast checker → · Palette generator →