#04151D#04151D

#04151D is a very dark, muted cyan. Relative luminance 0.007; OKLCH L 18.5% C 0.029 H 229.6°. Best body text is #FFFFFF at 18.58:1 contrast (WCAG AA passes).

Color values

HEX	#04151D
RGB	rgb(4, 21, 29)
HSL	hsl(199, 76%, 6%)
HSV	hsv(199, 86%, 11%)
CMYK	cmyk(86.2%, 27.6%, 0%, 88.6%)
CIE-LAB	lab(5.88, -3.22, -7.51)
CIE-LCH	lch(5.88, 8.17, 246.77°)
OKLab	oklab(18.5% -0.0188 -0.0221)
OKLCH	oklch(18.5% 0.029 229.6)
XYZ	xyz(0.5399, 0.6508, 1.2593)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04151D #1D0C04

analogous

#041D19 #04151D #04091D

triadic

#04151D #1D0415 #151D04

tetradic

#04151D #19041D #1D0C04 #091D04

square

#04151D #19041D #1D0C04 #091D04

split-complementary

#04151D #1D0409 #1D1904

monochromatic

#04131B #04131B #04151D #0B3C53 #136389

Accessibility & contrast

On white

18.58

#04151D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#04151D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04151D

18.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04151D	#FFFFFF	#000000	##FFFFFF
##04151D	1.00	18.58	1.13	18.58
#FFFFFF	18.58	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11151D

Deuteranopia (green-blind)

#0D121D

Tritanopia (blue-blind)

#001718

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #04151d;
/* rgb */ color: rgb(4, 21, 29);
/* oklch */ color: oklch(18.5% 0.029 229.6);

Tailwind

colors: {
  custom: {
    50: '#485258',
    500: '#04151d',
    950: '#000000',
  },
}

SCSS

$custom: #04151d;
$custom-light: #485258;
$custom-dark: #000000;

JSON

{
  "hex": "#04151d",
  "rgb": {
    "r": 4,
    "g": 21,
    "b": 29
  },
  "hsl": {
    "h": 199.2,
    "s": 75.758,
    "l": 6.471
  },
  "oklch": {
    "l": 0.18495,
    "c": 0.02899,
    "h": 229.6
  },
  "luminance": 0.00651
}

Semantic roles & 50–950 ramp

primary

#04151D

secondary

#5F321D

accent

#7235F2

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000203

muted

#777878

Preview Lab

Preview with #04151D

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

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