#428AD4#428AD4

#428AD4 is a light, vivid cyan. Relative luminance 0.241; OKLCH L 62.2% C 0.134 H 251.4°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#428AD4
RGB	rgb(66, 138, 212)
HSL	hsl(210, 63%, 55%)
HSV	hsv(210, 69%, 83%)
CMYK	cmyk(68.9%, 34.9%, 0%, 16.9%)
CIE-LAB	lab(56.17, 1.45, -44.57)
CIE-LCH	lch(56.17, 44.59, 271.86°)
OKLab	oklab(62.18% -0.0427 -0.1265)
OKLCH	oklch(62.18% 0.134 251.4)
XYZ	xyz(23.2145, 24.0862, 65.7003)
Luminance	0.2409 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AD4 #D48C42

analogous

#42D3D4 #428AD4 #4342D4

triadic

#428AD4 #D4428A #8AD442

tetradic

#428AD4 #D442D3 #D48C42 #42D443

square

#428AD4 #D442D3 #D48C42 #42D443

split-complementary

#428AD4 #D44342 #D3D442

monochromatic

#1D4D7F #286BB1 #428AD4 #74A9DF #A6C8EB

Accessibility & contrast

On white

3.61

#428AD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#428AD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AD4

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AD4	#FFFFFF	#000000	##000000
##428AD4	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#698ED7

Deuteranopia (green-blind)

#5480D3

Tritanopia (blue-blind)

#009BA5

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428ad4;
/* rgb */ color: rgb(66, 138, 212);
/* oklch */ color: oklch(62.2% 0.134 251.4);

Tailwind

colors: {
  custom: {
    50: '#86abe1',
    500: '#428ad4',
    950: '#000000',
  },
}

SCSS

$custom: #428ad4;
$custom-light: #86abe1;
$custom-dark: #000000;

JSON

{
  "hex": "#428ad4",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 212
  },
  "hsl": {
    "h": 210.411,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.62176,
    "c": 0.13354,
    "h": 251.4
  },
  "luminance": 0.24089
}

Semantic roles & 50–950 ramp

primary

#428AD4

secondary

#D8B99A

accent

#9542E6

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428AD4

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

Preview Lab → · Contrast checker → · Palette generator →