#0A182B#0A182B

#0A182B is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.8% C 0.043 H 256.5°. Best body text is #FFFFFF at 17.82:1 contrast (WCAG AA passes).

Color values

HEX	#0A182B
RGB	rgb(10, 24, 43)
HSL	hsl(215, 62%, 10%)
HSV	hsv(215, 77%, 17%)
CMYK	cmyk(76.7%, 44.2%, 0%, 83.1%)
CIE-LAB	lab(8.06, 1.60, -14.68)
CIE-LCH	lch(8.06, 14.76, 276.21°)
OKLab	oklab(20.78% -0.01 -0.0416)
OKLCH	oklch(20.78% 0.043 256.5)
XYZ	xyz(0.8877, 0.8921, 2.4104)
Luminance	0.0089 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A182B #2B1D0A

analogous

#0A282B #0A182B #0C0A2B

triadic

#0A182B #2B0A18 #182B0A

tetradic

#0A182B #2B0A28 #2B1D0A #0A2B0C

square

#0A182B #2B0A28 #2B1D0A #0A2B0C

split-complementary

#0A182B #2B0C0A #282B0A

monochromatic

#060E19 #060E19 #0A182B #16345D #214F8E

Accessibility & contrast

On white

17.82

#0A182B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0A182B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A182B

17.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A182B	#FFFFFF	#000000	##FFFFFF
##0A182B	1.00	17.82	1.18	17.82
#FFFFFF	17.82	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10192C

Deuteranopia (green-blind)

#0B162B

Tritanopia (blue-blind)

#001C1F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0a182b;
/* rgb */ color: rgb(10, 24, 43);
/* oklch */ color: oklch(20.8% 0.043 256.5);

Tailwind

colors: {
  custom: {
    50: '#4d5464',
    500: '#0a182b',
    950: '#000000',
  },
}

SCSS

$custom: #0a182b;
$custom-light: #4d5464;
$custom-dark: #000000;

JSON

{
  "hex": "#0a182b",
  "rgb": {
    "r": 10,
    "g": 24,
    "b": 43
  },
  "hsl": {
    "h": 214.545,
    "s": 62.264,
    "l": 10.392
  },
  "oklch": {
    "l": 0.20775,
    "c": 0.04279,
    "h": 256.5
  },
  "luminance": 0.00892
}

Semantic roles & 50–950 ramp

primary

#0A182B

secondary

#684D29

accent

#A042E5

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #0A182B

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

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