#04182A#04182A

#04182A is a very dark, muted cyan. Relative luminance 0.008; OKLCH L 20.3% C 0.045 H 247.6°. Best body text is #FFFFFF at 17.96:1 contrast (WCAG AA passes).

Color values

HEX	#04182A
RGB	rgb(4, 24, 42)
HSL	hsl(208, 83%, 9%)
HSV	hsv(208, 90%, 16%)
CMYK	cmyk(90.5%, 42.9%, 0%, 83.5%)
CIE-LAB	lab(7.64, -0.40, -14.61)
CIE-LCH	lch(7.64, 14.62, 268.43°)
OKLab	oklab(20.33% -0.0171 -0.0416)
OKLCH	oklch(20.33% 0.045 247.6)
XYZ	xyz(0.7945, 0.8462, 2.3115)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04182A #2A1604

analogous

#042A29 #04182A #04052A

triadic

#04182A #2A0418 #182A04

tetradic

#04182A #29042A #2A1604 #052A04

square

#04182A #29042A #2A1604 #052A04

split-complementary

#04182A #2A0405 #2A2904

monochromatic

#03101C #03101C #04182A #093862 #0F589A

Accessibility & contrast

On white

17.96

#04182A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#04182A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04182A

17.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04182A	#FFFFFF	#000000	##FFFFFF
##04182A	1.00	17.96	1.17	17.96
#FFFFFF	17.96	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10192B

Deuteranopia (green-blind)

#0A152A

Tritanopia (blue-blind)

#001C1F

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #04182a;
/* rgb */ color: rgb(4, 24, 42);
/* oklch */ color: oklch(20.3% 0.045 247.6);

Tailwind

colors: {
  custom: {
    50: '#495463',
    500: '#04182a',
    950: '#000000',
  },
}

SCSS

$custom: #04182a;
$custom-light: #495463;
$custom-dark: #000000;

JSON

{
  "hex": "#04182a",
  "rgb": {
    "r": 4,
    "g": 24,
    "b": 42
  },
  "hsl": {
    "h": 208.421,
    "s": 82.609,
    "l": 9.02
  },
  "oklch": {
    "l": 0.20325,
    "c": 0.04496,
    "h": 247.6
  },
  "luminance": 0.00846
}

Semantic roles & 50–950 ramp

primary

#04182A

secondary

#6D431D

accent

#8F2FF9

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#010205

muted

#777879

Preview Lab

Preview with #04182A

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

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