#10181F#10181F

#10181F is a very dark, near-neutral cyan. Relative luminance 0.009; OKLCH L 20.4% C 0.018 H 245.3°. Best body text is #FFFFFF at 17.91:1 contrast (WCAG AA passes).

Color values

HEX	#10181F
RGB	rgb(16, 24, 31)
HSL	hsl(208, 32%, 9%)
HSV	hsv(208, 48%, 12%)
CMYK	cmyk(48.4%, 22.6%, 0%, 87.8%)
CIE-LAB	lab(7.79, -1.31, -6.07)
CIE-LCH	lch(7.79, 6.21, 257.82°)
OKLab	oklab(20.45% -0.0077 -0.0167)
OKLCH	oklch(20.45% 0.018 245.3)
XYZ	xyz(0.7876, 0.8623, 1.4210)
Luminance	0.0086 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10181F #1F1710

analogous

#101F1F #10181F #10111F

triadic

#10181F #1F1018 #181F10

tetradic

#10181F #1F101F #1F1710 #111F10

square

#10181F #1F101F #1F1710 #111F10

split-complementary

#10181F #1F1011 #1F1F10

monochromatic

#0A1014 #0A1014 #10181F #253747 #3A5770

Accessibility & contrast

On white

17.91

#10181F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#10181F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10181F

17.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10181F	#FFFFFF	#000000	##FFFFFF
##10181F	1.00	17.91	1.17	17.91
#FFFFFF	17.91	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15181F

Deuteranopia (green-blind)

#13161F

Tritanopia (blue-blind)

#0B1A1A

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #10181f;
/* rgb */ color: rgb(16, 24, 31);
/* oklch */ color: oklch(20.4% 0.018 245.3);

Tailwind

colors: {
  custom: {
    50: '#4e545a',
    500: '#10181f',
    950: '#000000',
  },
}

SCSS

$custom: #10181f;
$custom-light: #4e545a;
$custom-dark: #000000;

JSON

{
  "hex": "#10181f",
  "rgb": {
    "r": 16,
    "g": 24,
    "b": 31
  },
  "hsl": {
    "h": 208,
    "s": 31.915,
    "l": 9.216
  },
  "oklch": {
    "l": 0.20447,
    "c": 0.01843,
    "h": 245.3
  },
  "luminance": 0.00862
}

Semantic roles & 50–950 ramp

primary

#10181F

secondary

#554436

accent

#9060C8

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010203

muted

#777878

Preview Lab

Preview with #10181F

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

Preview Lab → · Contrast checker → · Palette generator →