#0A101C#0A101C

#0A101C is a very dark, muted blue. Relative luminance 0.005; OKLCH L 17.4% C 0.027 H 263.5°. Best body text is #FFFFFF at 19.03:1 contrast (WCAG AA passes).

Color values

HEX	#0A101C
RGB	rgb(10, 16, 28)
HSL	hsl(220, 47%, 7%)
HSV	hsv(220, 64%, 11%)
CMYK	cmyk(64.3%, 42.9%, 0%, 89%)
CIE-LAB	lab(4.69, 1.10, -8.48)
CIE-LCH	lch(4.69, 8.55, 277.38°)
OKLab	oklab(17.36% -0.003 -0.0267)
OKLCH	oklch(17.36% 0.027 263.5)
XYZ	xyz(0.5200, 0.5189, 1.1711)
Luminance	0.0052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A101C #1C160A

analogous

#0A191C #0A101C #0D0A1C

triadic

#0A101C #1C0A10 #101C0A

tetradic

#0A101C #1C0A19 #1C160A #0A1C0D

square

#0A101C #1C0A19 #1C160A #0A1C0D

split-complementary

#0A101C #1C0D0A #191C0A

monochromatic

#080D17 #080D17 #0A101C #1A2A49 #2A4476

Accessibility & contrast

On white

19.03

#0A101C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0A101C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A101C

19.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A101C	#FFFFFF	#000000	##FFFFFF
##0A101C	1.00	19.03	1.10	19.03
#FFFFFF	19.03	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C111D

Deuteranopia (green-blind)

#0A0F1C

Tritanopia (blue-blind)

#041314

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #0a101c;
/* rgb */ color: rgb(10, 16, 28);
/* oklch */ color: oklch(17.4% 0.027 263.5);

Tailwind

colors: {
  custom: {
    50: '#4b4e58',
    500: '#0a101c',
    950: '#000000',
  },
}

SCSS

$custom: #0a101c;
$custom-light: #4b4e58;
$custom-dark: #000000;

JSON

{
  "hex": "#0a101c",
  "rgb": {
    "r": 10,
    "g": 16,
    "b": 28
  },
  "hsl": {
    "h": 220,
    "s": 47.368,
    "l": 7.451
  },
  "oklch": {
    "l": 0.1736,
    "c": 0.02686,
    "h": 263.5
  },
  "luminance": 0.00519
}

Semantic roles & 50–950 ramp

primary

#0A101C

secondary

#56482B

accent

#AA51D7

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010103

muted

#777778

Preview Lab

Preview with #0A101C

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

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