#428AC4#428AC4

#428AC4 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 61.3% C 0.114 H 245.5°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#428AC4
RGB	rgb(66, 138, 196)
HSL	hsl(207, 52%, 51%)
HSV	hsv(207, 66%, 77%)
CMYK	cmyk(66.3%, 29.6%, 0%, 23.1%)
CIE-LAB	lab(55.40, -4.07, -36.75)
CIE-LCH	lch(55.40, 36.97, 263.68°)
OKLab	oklab(61.31% -0.0472 -0.1038)
OKLCH	oklch(61.31% 0.114 245.5)
XYZ	xyz(21.2953, 23.3185, 55.5925)
Luminance	0.2332 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AC4 #C47C42

analogous

#42C4BD #428AC4 #4249C4

triadic

#428AC4 #C4428A #8AC442

tetradic

#428AC4 #BD42C4 #C47C42 #49C442

square

#428AC4 #BD42C4 #C47C42 #49C442

split-complementary

#428AC4 #C44249 #C4BD42

monochromatic

#214A6A #306A99 #428AC4 #71A7D3 #9FC4E1

Accessibility & contrast

On white

3.71

#428AC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#428AC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AC4

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AC4	#FFFFFF	#000000	##000000
##428AC4	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#708CC7

Deuteranopia (green-blind)

#5E7FC3

Tritanopia (blue-blind)

#00989E

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428ac4;
/* rgb */ color: rgb(66, 138, 196);
/* oklch */ color: oklch(61.3% 0.114 245.5);

Tailwind

colors: {
  custom: {
    50: '#84abd6',
    500: '#428ac4',
    950: '#000000',
  },
}

SCSS

$custom: #428ac4;
$custom-light: #84abd6;
$custom-dark: #000000;

JSON

{
  "hex": "#428ac4",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 196
  },
  "hsl": {
    "h": 206.769,
    "s": 52.419,
    "l": 51.373
  },
  "oklch": {
    "l": 0.61312,
    "c": 0.114,
    "h": 245.5
  },
  "luminance": 0.23321
}

Semantic roles & 50–950 ramp

primary

#428AC4

secondary

#CEAE94

accent

#8C4CDC

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428AC4

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

Preview Lab → · Contrast checker → · Palette generator →