#04181C#04181C

#04181C is a very dark, muted cyan. Relative luminance 0.008; OKLCH L 19.4% C 0.028 H 212.0°. Best body text is #FFFFFF at 18.22:1 contrast (WCAG AA passes).

Color values

HEX	#04181C
RGB	rgb(4, 24, 28)
HSL	hsl(190, 75%, 6%)
HSV	hsv(190, 86%, 11%)
CMYK	cmyk(85.7%, 14.3%, 0%, 89%)
CIE-LAB	lab(6.89, -5.69, -5.22)
CIE-LCH	lch(6.89, 7.72, 222.54°)
OKLab	oklab(19.42% -0.0236 -0.0148)
OKLCH	oklch(19.42% 0.028 212)
XYZ	xyz(0.5862, 0.7629, 1.2147)
Luminance	0.0076 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04181C #1C0804

analogous

#041C14 #04181C #040C1C

triadic

#04181C #1C0418 #181C04

tetradic

#04181C #14041C #1C0804 #0C1C04

square

#04181C #14041C #1C0804 #0C1C04

split-complementary

#04181C #1C040C #1C1404

monochromatic

#04171B #04171B #04181C #0C4652 #137487

Accessibility & contrast

On white

18.22

#04181C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#04181C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04181C

18.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04181C	#FFFFFF	#000000	##FFFFFF
##04181C	1.00	18.22	1.15	18.22
#FFFFFF	18.22	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15171C

Deuteranopia (green-blind)

#11141C

Tritanopia (blue-blind)

#001A19

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #04181c;
/* rgb */ color: rgb(4, 24, 28);
/* oklch */ color: oklch(19.4% 0.028 212.0);

Tailwind

colors: {
  custom: {
    50: '#485458',
    500: '#04181c',
    950: '#000000',
  },
}

SCSS

$custom: #04181c;
$custom-light: #485458;
$custom-dark: #000000;

JSON

{
  "hex": "#04181c",
  "rgb": {
    "r": 4,
    "g": 24,
    "b": 28
  },
  "hsl": {
    "h": 190,
    "s": 75,
    "l": 6.275
  },
  "oklch": {
    "l": 0.19422,
    "c": 0.02784,
    "h": 212
  },
  "luminance": 0.00763
}

Semantic roles & 50–950 ramp

primary

#04181C

secondary

#5E281D

accent

#5536F2

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000203

muted

#777878

Preview Lab

Preview with #04181C

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

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