#428BA7#428BA7

#428BA7 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.2% C 0.084 H 225.9°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#428BA7
RGB	rgb(66, 139, 167)
HSL	hsl(197, 43%, 46%)
HSV	hsv(197, 60%, 65%)
CMYK	cmyk(60.5%, 16.8%, 0%, 34.5%)
CIE-LAB	lab(54.46, -14.20, -21.64)
CIE-LCH	lch(54.46, 25.88, 236.73°)
OKLab	oklab(60.16% -0.0584 -0.0603)
OKLCH	oklch(60.16% 0.084 225.9)
XYZ	xyz(18.4517, 22.4117, 39.9052)
Luminance	0.2241 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428BA7 #A75E42

analogous

#42A790 #428BA7 #4258A7

triadic

#428BA7 #A7428B #8BA742

tetradic

#428BA7 #9042A7 #A75E42 #58A742

square

#428BA7 #9042A7 #A75E42 #58A742

split-complementary

#428BA7 #A74258 #A79042

monochromatic

#1F424F #31667B #428BA7 #64A8C2 #90C1D3

Accessibility & contrast

On white

3.83

#428BA7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#428BA7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428BA7

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428BA7	#FFFFFF	#000000	##000000
##428BA7	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C88A8

Deuteranopia (green-blind)

#6D7EA7

Tritanopia (blue-blind)

#009394

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #428ba7;
/* rgb */ color: rgb(66, 139, 167);
/* oklch */ color: oklch(60.2% 0.084 225.9);

Tailwind

colors: {
  custom: {
    50: '#80adc1',
    500: '#428ba7',
    950: '#000000',
  },
}

SCSS

$custom: #428ba7;
$custom-light: #80adc1;
$custom-dark: #000000;

JSON

{
  "hex": "#428ba7",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 167
  },
  "hsl": {
    "h": 196.634,
    "s": 43.348,
    "l": 45.686
  },
  "oklch": {
    "l": 0.60161,
    "c": 0.08391,
    "h": 225.9
  },
  "luminance": 0.22414
}

Semantic roles & 50–950 ramp

primary

#428BA7

secondary

#BE9686

accent

#7855D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428BA7

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

Preview Lab → · Contrast checker → · Palette generator →