#03121B#03121B

#03121B is a very dark, muted cyan. Relative luminance 0.005; OKLCH L 17.3% C 0.029 H 234.7°. Best body text is #FFFFFF at 18.98:1 contrast (WCAG AA passes).

Color values

HEX	#03121B
RGB	rgb(3, 18, 27)
HSL	hsl(203, 80%, 6%)
HSV	hsv(203, 89%, 11%)
CMYK	cmyk(88.9%, 33.3%, 0%, 89.4%)
CIE-LAB	lab(4.80, -2.18, -7.58)
CIE-LCH	lch(4.80, 7.89, 253.96°)
OKLab	oklab(17.31% -0.017 -0.024)
OKLCH	oklch(17.31% 0.029 234.7)
XYZ	xyz(0.4516, 0.5311, 1.1154)
Luminance	0.0053 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#03121B #1B0C03

analogous

#031B18 #03121B #03061B

triadic

#03121B #1B0312 #121B03

tetradic

#03121B #18031B #1B0C03 #061B03

square

#03121B #18031B #1B0C03 #061B03

split-complementary

#03121B #1B0306 #1B1803

monochromatic

#03121C #03121C #03121C #093752 #0F5B89

Accessibility & contrast

On white

18.98

#03121B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#03121B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #03121B

18.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##03121B	#FFFFFF	#000000	##FFFFFF
##03121B	1.00	18.98	1.11	18.98
#FFFFFF	18.98	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E121B

Deuteranopia (green-blind)

#0A0F1B

Tritanopia (blue-blind)

#001415

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #03121b;
/* rgb */ color: rgb(3, 18, 27);
/* oklch */ color: oklch(17.3% 0.029 234.7);

Tailwind

colors: {
  custom: {
    50: '#475057',
    500: '#03121b',
    950: '#000000',
  },
}

SCSS

$custom: #03121b;
$custom-light: #475057;
$custom-dark: #000000;

JSON

{
  "hex": "#03121b",
  "rgb": {
    "r": 3,
    "g": 18,
    "b": 27
  },
  "hsl": {
    "h": 202.5,
    "s": 80,
    "l": 5.882
  },
  "oklch": {
    "l": 0.17305,
    "c": 0.02942,
    "h": 234.7
  },
  "luminance": 0.00531
}

Semantic roles & 50–950 ramp

primary

#03121B

secondary

#5F341B

accent

#7B31F6

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000203

muted

#777878

Preview Lab

Preview with #03121B

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

Preview Lab → · Contrast checker → · Palette generator →