#04242B#04242B

#04242B is a very dark, muted cyan. Relative luminance 0.015; OKLCH L 24.1% C 0.039 H 215.3°. Best body text is #FFFFFF at 16.25:1 contrast (WCAG AA passes).

Color values

HEX	#04242B
RGB	rgb(4, 36, 43)
HSL	hsl(191, 83%, 9%)
HSV	hsv(191, 91%, 17%)
CMYK	cmyk(90.7%, 16.3%, 0%, 83.1%)
CIE-LAB	lab(12.36, -8.58, -8.01)
CIE-LCH	lch(12.36, 11.74, 223.00°)
OKLab	oklab(24.11% -0.0315 -0.0223)
OKLCH	oklch(24.11% 0.039 215.3)
XYZ	xyz(1.1168, 1.4618, 2.5083)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04242B #2B0B04

analogous

#042B1F #04242B #04112B

triadic

#04242B #2B0424 #242B04

tetradic

#04242B #1F042B #2B0B04 #112B04

square

#04242B #1F042B #2B0B04 #112B04

split-complementary

#04242B #2B0411 #2B1F04

monochromatic

#03171C #03171C #04242B #095363 #0E829B

Accessibility & contrast

On white

16.25

#04242B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#04242B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04242B

16.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04242B	#FFFFFF	#000000	##FFFFFF
##04242B	1.00	16.25	1.29	16.25
#FFFFFF	16.25	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F232B

Deuteranopia (green-blind)

#1A1F2B

Tritanopia (blue-blind)

#002726

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #04242b;
/* rgb */ color: rgb(4, 36, 43);
/* oklch */ color: oklch(24.1% 0.039 215.3);

Tailwind

colors: {
  custom: {
    50: '#4b5e64',
    500: '#04242b',
    950: '#000000',
  },
}

SCSS

$custom: #04242b;
$custom-light: #4b5e64;
$custom-dark: #000000;

JSON

{
  "hex": "#04242b",
  "rgb": {
    "r": 4,
    "g": 36,
    "b": 43
  },
  "hsl": {
    "h": 190.769,
    "s": 82.979,
    "l": 9.216
  },
  "oklch": {
    "l": 0.2411,
    "c": 0.03866,
    "h": 215.3
  },
  "luminance": 0.01462
}

Semantic roles & 50–950 ramp

primary

#04242B

secondary

#6E2C1D

accent

#532EF9

background

#F4F5F5

surface

#E7E9EA

border

#C3C5C6

text

#010405

muted

#777979

Preview Lab

Preview with #04242B

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

Preview Lab → · Contrast checker → · Palette generator →