#042131#042131

#042131 is a very dark, muted cyan. Relative luminance 0.013; OKLCH L 23.5% C 0.046 H 237.0°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#042131
RGB	rgb(4, 33, 49)
HSL	hsl(201, 85%, 10%)
HSV	hsv(201, 92%, 19%)
CMYK	cmyk(91.8%, 32.7%, 0%, 80.8%)
CIE-LAB	lab(11.52, -3.89, -13.64)
CIE-LCH	lch(11.52, 14.18, 254.07°)
OKLab	oklab(23.54% -0.025 -0.0385)
OKLCH	oklch(23.54% 0.046 237)
XYZ	xyz(1.1481, 1.3351, 3.1023)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042131 #311404

analogous

#04312A #042131 #040B31

triadic

#042131 #310421 #213104

tetradic

#042131 #2A0431 #311404 #0B3104

square

#042131 #2A0431 #311404 #0B3104

split-complementary

#042131 #31040B #312A04

monochromatic

#02131C #02131C #042131 #09476A #0D6DA2

Accessibility & contrast

On white

16.57

#042131 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#042131 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042131

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042131	#FFFFFF	#000000	##FFFFFF
##042131	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#192132

Deuteranopia (green-blind)

#131D31

Tritanopia (blue-blind)

#002527

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #042131;
/* rgb */ color: rgb(4, 33, 49);
/* oklch */ color: oklch(23.5% 0.046 237.0);

Tailwind

colors: {
  custom: {
    50: '#4c5c69',
    500: '#042131',
    950: '#000000',
  },
}

SCSS

$custom: #042131;
$custom-light: #4c5c69;
$custom-dark: #000000;

JSON

{
  "hex": "#042131",
  "rgb": {
    "r": 4,
    "g": 33,
    "b": 49
  },
  "hsl": {
    "h": 201.333,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.23538,
    "c": 0.04597,
    "h": 237
  },
  "luminance": 0.01335
}

Semantic roles & 50–950 ramp

primary

#042131

secondary

#733C1D

accent

#762DFB

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#010406

muted

#77797A

Preview Lab

Preview with #042131

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

Preview Lab → · Contrast checker → · Palette generator →