#0A181C#0A181C

#0A181C is a very dark, muted cyan. Relative luminance 0.008; OKLCH L 19.8% C 0.021 H 218.1°. Best body text is #FFFFFF at 18.10:1 contrast (WCAG AA passes).

Color values

HEX	#0A181C
RGB	rgb(10, 24, 28)
HSL	hsl(193, 47%, 7%)
HSV	hsv(193, 64%, 11%)
CMYK	cmyk(64.3%, 14.3%, 0%, 89%)
CIE-LAB	lab(7.24, -4.12, -4.66)
CIE-LCH	lch(7.24, 6.22, 228.53°)
OKLab	oklab(19.83% -0.0165 -0.013)
OKLCH	oklch(19.83% 0.021 218.1)
XYZ	xyz(0.6613, 0.8016, 1.2183)
Luminance	0.0080 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A181C #1C0E0A

analogous

#0A1C17 #0A181C #0A0F1C

triadic

#0A181C #1C0A18 #181C0A

tetradic

#0A181C #170A1C #1C0E0A #0F1C0A

square

#0A181C #170A1C #1C0E0A #0F1C0A

split-complementary

#0A181C #1C0A0F #1C170A

monochromatic

#081317 #081317 #0A181C #1A3F49 #2A6576

Accessibility & contrast

On white

18.10

#0A181C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0A181C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A181C

18.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A181C	#FFFFFF	#000000	##FFFFFF
##0A181C	1.00	18.10	1.16	18.10
#FFFFFF	18.10	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15171C

Deuteranopia (green-blind)

#13151C

Tritanopia (blue-blind)

#031919

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0a181c;
/* rgb */ color: rgb(10, 24, 28);
/* oklch */ color: oklch(19.8% 0.021 218.1);

Tailwind

colors: {
  custom: {
    50: '#4b5458',
    500: '#0a181c',
    950: '#000000',
  },
}

SCSS

$custom: #0a181c;
$custom-light: #4b5458;
$custom-dark: #000000;

JSON

{
  "hex": "#0a181c",
  "rgb": {
    "r": 10,
    "g": 24,
    "b": 28
  },
  "hsl": {
    "h": 193.333,
    "s": 47.368,
    "l": 7.451
  },
  "oklch": {
    "l": 0.19832,
    "c": 0.02103,
    "h": 218.1
  },
  "luminance": 0.00802
}

Semantic roles & 50–950 ramp

primary

#0A181C

secondary

#56352B

accent

#6F51D7

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010203

muted

#777878

Preview Lab

Preview with #0A181C

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

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