#0A182C#0A182C

#0A182C is a very dark, muted blue. Relative luminance 0.009; OKLCH L 20.8% C 0.045 H 257.5°. Best body text is #FFFFFF at 17.80:1 contrast (WCAG AA passes).

Color values

HEX	#0A182C
RGB	rgb(10, 24, 44)
HSL	hsl(215, 63%, 11%)
HSV	hsv(215, 77%, 17%)
CMYK	cmyk(77.3%, 45.5%, 0%, 82.7%)
CIE-LAB	lab(8.13, 2.04, -15.31)
CIE-LCH	lch(8.13, 15.45, 277.58°)
OKLab	oklab(20.85% -0.0097 -0.0434)
OKLCH	oklch(20.85% 0.045 257.5)
XYZ	xyz(0.9063, 0.8996, 2.5083)
Luminance	0.0090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A182C #2C1E0A

analogous

#0A292C #0A182C #0D0A2C

triadic

#0A182C #2C0A18 #182C0A

tetradic

#0A182C #2C0A29 #2C1E0A #0A2C0D

square

#0A182C #2C0A29 #2C1E0A #0A2C0D

split-complementary

#0A182C #2C0D0A #292C0A

monochromatic

#060E19 #060E19 #0A182C #15335E #214E90

Accessibility & contrast

On white

17.80

#0A182C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0A182C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A182C

17.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A182C	#FFFFFF	#000000	##FFFFFF
##0A182C	1.00	17.80	1.18	17.80
#FFFFFF	17.80	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F1A2D

Deuteranopia (green-blind)

#0B162C

Tritanopia (blue-blind)

#001D1F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0a182c;
/* rgb */ color: rgb(10, 24, 44);
/* oklch */ color: oklch(20.8% 0.045 257.5);

Tailwind

colors: {
  custom: {
    50: '#4d5465',
    500: '#0a182c',
    950: '#000000',
  },
}

SCSS

$custom: #0a182c;
$custom-light: #4d5465;
$custom-dark: #000000;

JSON

{
  "hex": "#0a182c",
  "rgb": {
    "r": 10,
    "g": 24,
    "b": 44
  },
  "hsl": {
    "h": 215.294,
    "s": 62.963,
    "l": 10.588
  },
  "oklch": {
    "l": 0.20848,
    "c": 0.04451,
    "h": 257.5
  },
  "luminance": 0.009
}

Semantic roles & 50–950 ramp

primary

#0A182C

secondary

#694F29

accent

#A242E6

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #0A182C

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

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