#428EA0#428EA0

#428EA0 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.6% C 0.079 H 215.5°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#428EA0
RGB	rgb(66, 142, 160)
HSL	hsl(191, 42%, 44%)
HSV	hsv(191, 59%, 63%)
CMYK	cmyk(58.8%, 11.2%, 0%, 37.3%)
CIE-LAB	lab(55.11, -18.01, -16.62)
CIE-LCH	lch(55.11, 24.50, 222.71°)
OKLab	oklab(60.6% -0.0645 -0.0461)
OKLCH	oklch(60.6% 0.079 215.5)
XYZ	xyz(18.2624, 23.0405, 36.7357)
Luminance	0.2304 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EA0 #A05442

analogous

#42A083 #428EA0 #425FA0

triadic

#428EA0 #A0428E #8EA042

tetradic

#428EA0 #8342A0 #A05442 #5FA042

square

#428EA0 #8342A0 #A05442 #5FA042

split-complementary

#428EA0 #A0425F #A08342

monochromatic

#1E4149 #306875 #428EA0 #61ACBE #8DC3D0

Accessibility & contrast

On white

3.74

#428EA0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#428EA0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EA0

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EA0	#FFFFFF	#000000	##000000
##428EA0	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#818AA1

Deuteranopia (green-blind)

#737FA0

Tritanopia (blue-blind)

#009594

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428ea0;
/* rgb */ color: rgb(66, 142, 160);
/* oklch */ color: oklch(60.6% 0.079 215.5);

Tailwind

colors: {
  custom: {
    50: '#7fafbc',
    500: '#428ea0',
    950: '#000000',
  },
}

SCSS

$custom: #428ea0;
$custom-light: #7fafbc;
$custom-dark: #000000;

JSON

{
  "hex": "#428ea0",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 160
  },
  "hsl": {
    "h": 191.489,
    "s": 41.593,
    "l": 44.314
  },
  "oklch": {
    "l": 0.60596,
    "c": 0.07931,
    "h": 215.5
  },
  "luminance": 0.23042
}

Semantic roles & 50–950 ramp

primary

#428EA0

secondary

#BB8E83

accent

#6E56D1

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428EA0

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

Preview Lab → · Contrast checker → · Palette generator →