#0A152E#0A152E

#0A152E is a very dark, muted blue. Relative luminance 0.008; OKLCH L 20.2% C 0.053 H 264.3°. Best body text is #FFFFFF at 18.11:1 contrast (WCAG AA passes).

Color values

HEX	#0A152E
RGB	rgb(10, 21, 46)
HSL	hsl(222, 64%, 11%)
HSV	hsv(222, 78%, 18%)
CMYK	cmyk(78.3%, 54.3%, 0%, 82%)
CIE-LAB	lab(7.21, 5.21, -18.25)
CIE-LCH	lch(7.21, 18.97, 285.92°)
OKLab	oklab(20.17% -0.0052 -0.0522)
OKLCH	oklch(20.17% 0.053 264.3)
XYZ	xyz(0.8863, 0.7980, 2.6916)
Luminance	0.0080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A152E #2E230A

analogous

#0A272E #0A152E #110A2E

triadic

#0A152E #2E0A15 #152E0A

tetradic

#0A152E #2E0A27 #2E230A #0A2E11

square

#0A152E #2E0A27 #2E230A #0A2E11

split-complementary

#0A152E #2E110A #272E0A

monochromatic

#050B19 #050B19 #0A152E #152C60 #204393

Accessibility & contrast

On white

18.11

#0A152E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0A152E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A152E

18.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A152E	#FFFFFF	#000000	##FFFFFF
##0A152E	1.00	18.11	1.16	18.11
#FFFFFF	18.11	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09182F

Deuteranopia (green-blind)

#04142D

Tritanopia (blue-blind)

#001B1F

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0a152e;
/* rgb */ color: rgb(10, 21, 46);
/* oklch */ color: oklch(20.2% 0.053 264.3);

Tailwind

colors: {
  custom: {
    50: '#4e5167',
    500: '#0a152e',
    950: '#000000',
  },
}

SCSS

$custom: #0a152e;
$custom-light: #4e5167;
$custom-dark: #000000;

JSON

{
  "hex": "#0a152e",
  "rgb": {
    "r": 10,
    "g": 21,
    "b": 46
  },
  "hsl": {
    "h": 221.667,
    "s": 64.286,
    "l": 10.98
  },
  "oklch": {
    "l": 0.20165,
    "c": 0.05251,
    "h": 264.3
  },
  "luminance": 0.00798
}

Semantic roles & 50–950 ramp

primary

#0A152E

secondary

#6B5729

accent

#B441E7

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020206

muted

#78787A

Preview Lab

Preview with #0A152E

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

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