#428ADA#428ADA

#428ADA is a light, vivid cyan. Relative luminance 0.244; OKLCH L 62.5% C 0.141 H 253.0°. Best body text is #000000 at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#428ADA
RGB	rgb(66, 138, 218)
HSL	hsl(212, 67%, 56%)
HSV	hsv(212, 70%, 85%)
CMYK	cmyk(69.7%, 36.7%, 0%, 14.5%)
CIE-LAB	lab(56.48, 3.55, -47.45)
CIE-LCH	lch(56.48, 47.58, 274.28°)
OKLab	oklab(62.52% -0.0411 -0.135)
OKLCH	oklch(62.52% 0.141 253)
XYZ	xyz(23.9855, 24.3946, 69.7606)
Luminance	0.2440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428ADA #DA9242

analogous

#42D6DA #428ADA #4642DA

triadic

#428ADA #DA428A #8ADA42

tetradic

#428ADA #DA42D6 #DA9242 #42DA46

square

#428ADA #DA42D6 #DA9242 #42DA46

split-complementary

#428ADA #DA4642 #D6DA42

monochromatic

#1A4E87 #246BBA #428ADA #75AAE4 #A8C9EE

Accessibility & contrast

On white

3.57

#428ADA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.88

#428ADA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428ADA

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428ADA	#FFFFFF	#000000	##000000
##428ADA	1.00	3.57	5.88	5.88
#FFFFFF	3.57	1.00	21.00	21.00
#000000	5.88	21.00	1.00	1.00
##000000	5.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#668FDD

Deuteranopia (green-blind)

#4F81D8

Tritanopia (blue-blind)

#009DA8

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428ada;
/* rgb */ color: rgb(66, 138, 218);
/* oklch */ color: oklch(62.5% 0.141 253.0);

Tailwind

colors: {
  custom: {
    50: '#87abe6',
    500: '#428ada',
    950: '#000000',
  },
}

SCSS

$custom: #428ada;
$custom-light: #87abe6;
$custom-dark: #000000;

JSON

{
  "hex": "#428ada",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 218
  },
  "hsl": {
    "h": 211.579,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.62516,
    "c": 0.1411,
    "h": 253
  },
  "luminance": 0.24397
}

Semantic roles & 50–950 ramp

primary

#428ADA

secondary

#DBBE9C

accent

#983EEA

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428ADA

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

Preview Lab → · Contrast checker → · Palette generator →