#428AC0#428AC0

#428AC0 is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 61.1% C 0.109 H 243.7°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#428AC0
RGB	rgb(66, 138, 192)
HSL	hsl(206, 50%, 51%)
HSV	hsv(206, 66%, 75%)
CMYK	cmyk(65.6%, 28.1%, 0%, 24.7%)
CIE-LAB	lab(55.22, -5.43, -34.77)
CIE-LCH	lch(55.22, 35.19, 261.12°)
OKLab	oklab(61.11% -0.0485 -0.098)
OKLCH	oklch(61.11% 0.109 243.7)
XYZ	xyz(20.8461, 23.1388, 53.2266)
Luminance	0.2314 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AC0 #C07842

analogous

#42C0B7 #428AC0 #424BC0

triadic

#428AC0 #C0428A #8AC042

tetradic

#428AC0 #B742C0 #C07842 #4BC042

square

#428AC0 #B742C0 #C07842 #4BC042

split-complementary

#428AC0 #C0424B #C0B742

monochromatic

#224966 #316994 #428AC0 #70A6CF #9EC3DF

Accessibility & contrast

On white

3.73

#428AC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#428AC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AC0

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AC0	#FFFFFF	#000000	##000000
##428AC0	1.00	3.73	5.63	5.63
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.63	21.00	1.00	1.00
##000000	5.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728BC2

Deuteranopia (green-blind)

#617FBF

Tritanopia (blue-blind)

#00979D

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428ac0;
/* rgb */ color: rgb(66, 138, 192);
/* oklch */ color: oklch(61.1% 0.109 243.7);

Tailwind

colors: {
  custom: {
    50: '#83acd3',
    500: '#428ac0',
    950: '#000000',
  },
}

SCSS

$custom: #428ac0;
$custom-light: #83acd3;
$custom-dark: #000000;

JSON

{
  "hex": "#428ac0",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 192
  },
  "hsl": {
    "h": 205.714,
    "s": 50,
    "l": 50.588
  },
  "oklch": {
    "l": 0.61107,
    "c": 0.10933,
    "h": 243.7
  },
  "luminance": 0.23141
}

Semantic roles & 50–950 ramp

primary

#428AC0

secondary

#CBAB93

accent

#8A4EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428AC0

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

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