#031B2B#031B2B

#031B2B is a very dark, muted cyan. Relative luminance 0.010; OKLCH L 21.3% C 0.044 H 240.8°. Best body text is #FFFFFF at 17.56:1 contrast (WCAG AA passes).

Color values

HEX	#031B2B
RGB	rgb(3, 27, 43)
HSL	hsl(204, 87%, 9%)
HSV	hsv(204, 93%, 17%)
CMYK	cmyk(93%, 37.2%, 0%, 83.1%)
CIE-LAB	lab(8.80, -2.50, -13.53)
CIE-LCH	lch(8.80, 13.76, 259.53°)
OKLab	oklab(21.25% -0.0215 -0.0383)
OKLCH	oklch(21.25% 0.044 240.8)
XYZ	xyz(0.8654, 0.9775, 2.4281)
Luminance	0.0098 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031B2B #2B1303

analogous

#032B27 #031B2B #03072B

triadic

#031B2B #2B031B #1B2B03

tetradic

#031B2B #27032B #2B1303 #072B03

square

#031B2B #27032B #2B1303 #072B03

split-complementary

#031B2B #2B0307 #2B2703

monochromatic

#02121D #02121D #031B2B #073F64 #0B639D

Accessibility & contrast

On white

17.56

#031B2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#031B2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031B2B

17.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031B2B	#FFFFFF	#000000	##FFFFFF
##031B2B	1.00	17.56	1.20	17.56
#FFFFFF	17.56	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131B2C

Deuteranopia (green-blind)

#0E172B

Tritanopia (blue-blind)

#001F21

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #031b2b;
/* rgb */ color: rgb(3, 27, 43);
/* oklch */ color: oklch(21.3% 0.044 240.8);

Tailwind

colors: {
  custom: {
    50: '#495764',
    500: '#031b2b',
    950: '#000000',
  },
}

SCSS

$custom: #031b2b;
$custom-light: #495764;
$custom-dark: #000000;

JSON

{
  "hex": "#031b2b",
  "rgb": {
    "r": 3,
    "g": 27,
    "b": 43
  },
  "hsl": {
    "h": 204,
    "s": 86.957,
    "l": 9.02
  },
  "oklch": {
    "l": 0.2125,
    "c": 0.04395,
    "h": 240.8
  },
  "luminance": 0.00978
}

Semantic roles & 50–950 ramp

primary

#031B2B

secondary

#6F3D1B

accent

#7F2BFD

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#010305

muted

#77787A

Preview Lab

Preview with #031B2B

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

Preview Lab → · Contrast checker → · Palette generator →