#428AC8#428AC8

#428AC8 is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 61.5% C 0.119 H 247.2°. Best body text is #000000 at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#428AC8
RGB	rgb(66, 138, 200)
HSL	hsl(208, 55%, 52%)
HSV	hsv(208, 67%, 78%)
CMYK	cmyk(67%, 31%, 0%, 21.6%)
CIE-LAB	lab(55.59, -2.70, -38.72)
CIE-LCH	lch(55.59, 38.82, 266.00°)
OKLab	oklab(61.52% -0.046 -0.1095)
OKLCH	oklch(61.52% 0.119 247.2)
XYZ	xyz(21.7567, 23.5031, 58.0223)
Luminance	0.2351 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AC8 #C88042

analogous

#42C8C3 #428AC8 #4247C8

triadic

#428AC8 #C8428A #8AC842

tetradic

#428AC8 #C342C8 #C88042 #47C842

square

#428AC8 #C342C8 #C88042 #47C842

split-complementary

#428AC8 #C84247 #C8C342

monochromatic

#204B6F #2E6B9F #428AC8 #71A7D6 #A1C5E4

Accessibility & contrast

On white

3.68

#428AC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.70

#428AC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AC8

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AC8	#FFFFFF	#000000	##000000
##428AC8	1.00	3.68	5.70	5.70
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.70	21.00	1.00	1.00
##000000	5.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F8CCB

Deuteranopia (green-blind)

#5C7FC7

Tritanopia (blue-blind)

#0099A0

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428ac8;
/* rgb */ color: rgb(66, 138, 200);
/* oklch */ color: oklch(61.5% 0.119 247.2);

Tailwind

colors: {
  custom: {
    50: '#84abd9',
    500: '#428ac8',
    950: '#000000',
  },
}

SCSS

$custom: #428ac8;
$custom-light: #84abd9;
$custom-dark: #000000;

JSON

{
  "hex": "#428ac8",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 200
  },
  "hsl": {
    "h": 207.761,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.61522,
    "c": 0.11877,
    "h": 247.2
  },
  "luminance": 0.23505
}

Semantic roles & 50–950 ramp

primary

#428AC8

secondary

#D0B196

accent

#8E4ADE

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428AC8

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

Preview Lab → · Contrast checker → · Palette generator →