#428ADC#428ADC

#428ADC is a light, vivid cyan. Relative luminance 0.245; OKLCH L 62.6% C 0.144 H 253.6°. Best body text is #000000 at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#428ADC
RGB	rgb(66, 138, 220)
HSL	hsl(212, 69%, 56%)
HSV	hsv(212, 70%, 86%)
CMYK	cmyk(70%, 37.3%, 0%, 13.7%)
CIE-LAB	lab(56.58, 4.25, -48.41)
CIE-LCH	lch(56.58, 48.59, 275.02°)
OKLab	oklab(62.63% -0.0406 -0.1378)
OKLCH	oklch(62.63% 0.144 253.6)
XYZ	xyz(24.2487, 24.4999, 71.1473)
Luminance	0.2450 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428ADC #DC9442

analogous

#42D7DC #428ADC #4742DC

triadic

#428ADC #DC428A #8ADC42

tetradic

#428ADC #DC42D7 #DC9442 #42DC47

square

#428ADC #DC42D7 #DC9442 #42DC47

split-complementary

#428ADC #DC4742 #D7DC42

monochromatic

#1A4E8A #236BBE #428ADC #76AAE6 #A9CAEF

Accessibility & contrast

On white

3.56

#428ADC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.90

#428ADC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428ADC

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428ADC	#FFFFFF	#000000	##000000
##428ADC	1.00	3.56	5.90	5.90
#FFFFFF	3.56	1.00	21.00	21.00
#000000	5.90	21.00	1.00	1.00
##000000	5.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6590DF

Deuteranopia (green-blind)

#4E81DA

Tritanopia (blue-blind)

#009DA8

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428adc;
/* rgb */ color: rgb(66, 138, 220);
/* oklch */ color: oklch(62.6% 0.144 253.6);

Tailwind

colors: {
  custom: {
    50: '#88abe7',
    500: '#428adc',
    950: '#000000',
  },
}

SCSS

$custom: #428adc;
$custom-light: #88abe7;
$custom-dark: #000000;

JSON

{
  "hex": "#428adc",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 220
  },
  "hsl": {
    "h": 211.948,
    "s": 68.75,
    "l": 56.078
  },
  "oklch": {
    "l": 0.62631,
    "c": 0.14364,
    "h": 253.6
  },
  "luminance": 0.24503
}

Semantic roles & 50–950 ramp

primary

#428ADC

secondary

#DDBF9D

accent

#9A3CEC

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428ADC

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

Preview Lab → · Contrast checker → · Palette generator →