#31373B#31373B

#31373B is a dark, near-neutral cyan. Relative luminance 0.037; OKLCH L 33.3% C 0.011 H 236.9°. Best body text is #FFFFFF at 12.07:1 contrast (WCAG AA passes).

Color values

HEX	#31373B
RGB	rgb(49, 55, 59)
HSL	hsl(204, 9%, 21%)
HSV	hsv(204, 17%, 23%)
CMYK	cmyk(16.9%, 6.8%, 0%, 76.9%)
CIE-LAB	lab(22.66, -1.52, -3.36)
CIE-LCH	lch(22.66, 3.69, 245.61°)
OKLab	oklab(33.27% -0.0059 -0.0091)
OKLCH	oklch(33.27% 0.011 236.9)
XYZ	xyz(3.4220, 3.7010, 4.6709)
Luminance	0.0370 (WCAG relative)
Temperature	neutral
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31373B #3B3531

analogous

#313B3A #31373B #31323B

triadic

#31373B #3B3137 #373B31

tetradic

#31373B #3A313B #3B3531 #323B31

square

#31373B #3A313B #3B3531 #323B31

split-complementary

#31373B #3B3132 #3B3A31

monochromatic

#0E1011 #15181A #31373B #4D565C #69757E

Accessibility & contrast

On white

12.07

#31373B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#31373B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31373B

12.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31373B	#FFFFFF	#000000	##FFFFFF
##31373B	1.00	12.07	1.74	12.07
#FFFFFF	12.07	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35373B

Deuteranopia (green-blind)

#34363B

Tritanopia (blue-blind)

#2E3838

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #31373b;
/* rgb */ color: rgb(49, 55, 59);
/* oklch */ color: oklch(33.3% 0.011 236.9);

Tailwind

colors: {
  custom: {
    50: '#696d70',
    500: '#31373b',
    950: '#000000',
  },
}

SCSS

$custom: #31373b;
$custom-light: #696d70;
$custom-dark: #000000;

JSON

{
  "hex": "#31373b",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 59
  },
  "hsl": {
    "h": 204,
    "s": 9.259,
    "l": 21.176
  },
  "oklch": {
    "l": 0.33265,
    "c": 0.01083,
    "h": 236.9
  },
  "luminance": 0.03701
}

Semantic roles & 50–950 ramp

primary

#31373B

secondary

#6A635D

accent

#8E76B2

background

#F6F6F6

surface

#EBEBEC

border

#C6C6C7

text

#060707

muted

#7A7A7A

Preview Lab

Preview with #31373B

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

Preview Lab → · Contrast checker → · Palette generator →