#03151B#03151B

#03151B is a very dark, muted cyan. Relative luminance 0.006; OKLCH L 18.3% C 0.028 H 221.1°. Best body text is #FFFFFF at 18.63:1 contrast (WCAG AA passes).

Color values

HEX	#03151B
RGB	rgb(3, 21, 27)
HSL	hsl(195, 80%, 6%)
HSV	hsv(195, 89%, 11%)
CMYK	cmyk(88.9%, 22.2%, 0%, 89.4%)
CIE-LAB	lab(5.73, -4.09, -6.19)
CIE-LCH	lch(5.73, 7.42, 236.53°)
OKLab	oklab(18.3% -0.0212 -0.0185)
OKLCH	oklch(18.3% 0.028 221.1)
XYZ	xyz(0.5035, 0.6348, 1.1327)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#03151B #1B0903

analogous

#031B15 #03151B #03091B

triadic

#03151B #1B0315 #151B03

tetradic

#03151B #15031B #1B0903 #091B03

square

#03151B #15031B #1B0903 #091B03

split-complementary

#03151B #1B0309 #1B1503

monochromatic

#03151C #03151C #03151C #094052 #0F6B89

Accessibility & contrast

On white

18.63

#03151B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#03151B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #03151B

18.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##03151B	#FFFFFF	#000000	##FFFFFF
##03151B	1.00	18.63	1.13	18.63
#FFFFFF	18.63	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11141B

Deuteranopia (green-blind)

#0E111B

Tritanopia (blue-blind)

#001717

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #03151b;
/* rgb */ color: rgb(3, 21, 27);
/* oklch */ color: oklch(18.3% 0.028 221.1);

Tailwind

colors: {
  custom: {
    50: '#475257',
    500: '#03151b',
    950: '#000000',
  },
}

SCSS

$custom: #03151b;
$custom-light: #475257;
$custom-dark: #000000;

JSON

{
  "hex": "#03151b",
  "rgb": {
    "r": 3,
    "g": 21,
    "b": 27
  },
  "hsl": {
    "h": 195,
    "s": 80,
    "l": 5.882
  },
  "oklch": {
    "l": 0.18296,
    "c": 0.02816,
    "h": 221.1
  },
  "luminance": 0.00635
}

Semantic roles & 50–950 ramp

primary

#03151B

secondary

#5F2C1B

accent

#6331F6

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000203

muted

#777878

Preview Lab

Preview with #03151B

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

Preview Lab → · Contrast checker → · Palette generator →