#151B22#151B22

#151B22 is a very dark, near-neutral cyan. Relative luminance 0.011; OKLCH L 21.9% C 0.016 H 252.5°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#151B22
RGB	rgb(21, 27, 34)
HSL	hsl(212, 24%, 11%)
HSV	hsv(212, 38%, 13%)
CMYK	cmyk(38.2%, 20.6%, 0%, 86.7%)
CIE-LAB	lab(9.47, -0.61, -5.73)
CIE-LCH	lch(9.47, 5.76, 263.97°)
OKLab	oklab(21.93% -0.005 -0.0157)
OKLCH	oklch(21.93% 0.016 252.5)
XYZ	xyz(0.9898, 1.0588, 1.6653)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B22 #221C15

analogous

#152122 #151B22 #151522

triadic

#151B22 #22151B #1B2215

tetradic

#151B22 #221521 #221C15 #152215

square

#151B22 #221521 #221C15 #152215

split-complementary

#151B22 #221515 #212215

monochromatic

#0C0F13 #0C0F13 #151B22 #2C3948 #44576E

Accessibility & contrast

On white

17.33

#151B22 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#151B22 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B22

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B22	#FFFFFF	#000000	##FFFFFF
##151B22	1.00	17.33	1.21	17.33
#FFFFFF	17.33	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181B22

Deuteranopia (green-blind)

#171A22

Tritanopia (blue-blind)

#111D1D

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #151b22;
/* rgb */ color: rgb(21, 27, 34);
/* oklch */ color: oklch(21.9% 0.016 252.5);

Tailwind

colors: {
  custom: {
    50: '#52575d',
    500: '#151b22',
    950: '#000000',
  },
}

SCSS

$custom: #151b22;
$custom-light: #52575d;
$custom-dark: #000000;

JSON

{
  "hex": "#151b22",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 34
  },
  "hsl": {
    "h": 212.308,
    "s": 23.636,
    "l": 10.784
  },
  "oklch": {
    "l": 0.21929,
    "c": 0.01646,
    "h": 252.5
  },
  "luminance": 0.01059
}

Semantic roles & 50–950 ramp

primary

#151B22

secondary

#564A3D

accent

#9768C0

background

#F4F5F5

surface

#E7E9E9

border

#C3C5C5

text

#020304

muted

#787879

Preview Lab

Preview with #151B22

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

Preview Lab → · Contrast checker → · Palette generator →