#05151B#05151B

#05151B is a very dark, muted cyan. Relative luminance 0.006; OKLCH L 18.5% C 0.026 H 224.0°. Best body text is #FFFFFF at 18.59:1 contrast (WCAG AA passes).

Color values

HEX	#05151B
RGB	rgb(5, 21, 27)
HSL	hsl(196, 69%, 6%)
HSV	hsv(196, 81%, 11%)
CMYK	cmyk(81.5%, 22.2%, 0%, 89.4%)
CIE-LAB	lab(5.85, -3.57, -6.00)
CIE-LCH	lch(5.85, 6.98, 239.26°)
OKLab	oklab(18.45% -0.0184 -0.0178)
OKLCH	oklch(18.45% 0.026 224)
XYZ	xyz(0.5285, 0.6477, 1.1339)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05151B #1B0B05

analogous

#051B16 #05151B #050A1B

triadic

#05151B #1B0515 #151B05

tetradic

#05151B #16051B #1B0B05 #0A1B05

square

#05151B #16051B #1B0B05 #0A1B05

split-complementary

#05151B #1B050A #1B1605

monochromatic

#05141A #05141A #05151B #0F3D4F #186582

Accessibility & contrast

On white

18.59

#05151B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#05151B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05151B

18.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05151B	#FFFFFF	#000000	##FFFFFF
##05151B	1.00	18.59	1.13	18.59
#FFFFFF	18.59	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12141B

Deuteranopia (green-blind)

#0E121B

Tritanopia (blue-blind)

#001717

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #05151b;
/* rgb */ color: rgb(5, 21, 27);
/* oklch */ color: oklch(18.5% 0.026 224.0);

Tailwind

colors: {
  custom: {
    50: '#485257',
    500: '#05151b',
    950: '#000000',
  },
}

SCSS

$custom: #05151b;
$custom-light: #485257;
$custom-dark: #000000;

JSON

{
  "hex": "#05151b",
  "rgb": {
    "r": 5,
    "g": 21,
    "b": 27
  },
  "hsl": {
    "h": 196.364,
    "s": 68.75,
    "l": 6.275
  },
  "oklch": {
    "l": 0.18453,
    "c": 0.02563,
    "h": 224
  },
  "luminance": 0.00648
}

Semantic roles & 50–950 ramp

primary

#05151B

secondary

#5C3020

accent

#6C3CEC

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000203

muted

#777878

Preview Lab

Preview with #05151B

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

Preview Lab → · Contrast checker → · Palette generator →