#04182D#04182D

#04182D is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.6% C 0.050 H 251.1°. Best body text is #FFFFFF at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#04182D
RGB	rgb(4, 24, 45)
HSL	hsl(211, 84%, 10%)
HSV	hsv(211, 91%, 18%)
CMYK	cmyk(91.1%, 46.7%, 0%, 82.4%)
CIE-LAB	lab(7.84, 1.02, -16.52)
CIE-LCH	lch(7.84, 16.55, 273.52°)
OKLab	oklab(20.55% -0.0161 -0.0471)
OKLCH	oklch(20.55% 0.05 251.1)
XYZ	xyz(0.8502, 0.8684, 2.6049)
Luminance	0.0087 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04182D #2D1904

analogous

#042D2D #04182D #05042D

triadic

#04182D #2D0418 #182D04

tetradic

#04182D #2D042D #2D1904 #042D05

square

#04182D #2D042D #2D1904 #042D05

split-complementary

#04182D #2D0504 #2D2D04

monochromatic

#020F1C #020F1C #04182D #093665 #0E549D

Accessibility & contrast

On white

17.89

#04182D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#04182D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04182D

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04182D	#FFFFFF	#000000	##FFFFFF
##04182D	1.00	17.89	1.17	17.89
#FFFFFF	17.89	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E192E

Deuteranopia (green-blind)

#08152D

Tritanopia (blue-blind)

#001D20

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #04182d;
/* rgb */ color: rgb(4, 24, 45);
/* oklch */ color: oklch(20.6% 0.050 251.1);

Tailwind

colors: {
  custom: {
    50: '#4a5466',
    500: '#04182d',
    950: '#000000',
  },
}

SCSS

$custom: #04182d;
$custom-light: #4a5466;
$custom-dark: #000000;

JSON

{
  "hex": "#04182d",
  "rgb": {
    "r": 4,
    "g": 24,
    "b": 45
  },
  "hsl": {
    "h": 210.732,
    "s": 83.673,
    "l": 9.608
  },
  "oklch": {
    "l": 0.20553,
    "c": 0.04979,
    "h": 251.1
  },
  "luminance": 0.00869
}

Semantic roles & 50–950 ramp

primary

#04182D

secondary

#70471D

accent

#962EFA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010206

muted

#77787A

Preview Lab

Preview with #04182D

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

Preview Lab → · Contrast checker → · Palette generator →