#04182F#04182F

#04182F is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.7% C 0.053 H 253.0°. Best body text is #FFFFFF at 17.85:1 contrast (WCAG AA passes).

Color values

HEX	#04182F
RGB	rgb(4, 24, 47)
HSL	hsl(212, 84%, 10%)
HSV	hsv(212, 91%, 18%)
CMYK	cmyk(91.5%, 48.9%, 0%, 81.6%)
CIE-LAB	lab(7.99, 1.98, -17.76)
CIE-LCH	lch(7.99, 17.87, 276.36°)
OKLab	oklab(20.71% -0.0155 -0.0508)
OKLCH	oklch(20.71% 0.053 253)
XYZ	xyz(0.8896, 0.8842, 2.8126)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04182F #2F1B04

analogous

#042E2F #04182F #05042F

triadic

#04182F #2F0418 #182F04

tetradic

#04182F #2F042E #2F1B04 #042F05

square

#04182F #2F042E #2F1B04 #042F05

split-complementary

#04182F #2F0504 #2E2F04

monochromatic

#020E1C #020E1C #04182F #093567 #0E52A0

Accessibility & contrast

On white

17.85

#04182F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#04182F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04182F

17.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04182F	#FFFFFF	#000000	##FFFFFF
##04182F	1.00	17.85	1.18	17.85
#FFFFFF	17.85	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D1A30

Deuteranopia (green-blind)

#06162F

Tritanopia (blue-blind)

#001D21

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #04182f;
/* rgb */ color: rgb(4, 24, 47);
/* oklch */ color: oklch(20.7% 0.053 253.0);

Tailwind

colors: {
  custom: {
    50: '#4b5467',
    500: '#04182f',
    950: '#000000',
  },
}

SCSS

$custom: #04182f;
$custom-light: #4b5467;
$custom-dark: #000000;

JSON

{
  "hex": "#04182f",
  "rgb": {
    "r": 4,
    "g": 24,
    "b": 47
  },
  "hsl": {
    "h": 212.093,
    "s": 84.314,
    "l": 10
  },
  "oklch": {
    "l": 0.20712,
    "c": 0.05308,
    "h": 253
  },
  "luminance": 0.00884
}

Semantic roles & 50–950 ramp

primary

#04182F

secondary

#724A1D

accent

#9B2DFB

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010206

muted

#77787A

Preview Lab

Preview with #04182F

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

Preview Lab → · Contrast checker → · Palette generator →