#0A103D#0A103D

#0A103D is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.4% C 0.086 H 270.7°. Best body text is #FFFFFF at 18.19:1 contrast (WCAG AA passes).

Color values

HEX	#0A103D
RGB	rgb(10, 16, 61)
HSL	hsl(233, 72%, 14%)
HSV	hsv(233, 84%, 24%)
CMYK	cmyk(83.6%, 73.8%, 0%, 76.1%)
CIE-LAB	lab(6.97, 15.85, -29.55)
CIE-LCH	lch(6.97, 33.53, 298.21°)
OKLab	oklab(20.4% 0.001 -0.0856)
OKLCH	oklch(20.4% 0.086 270.7)
XYZ	xyz(1.1525, 0.7719, 4.5022)
Luminance	0.0077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A103D #3D370A

analogous

#0A2A3D #0A103D #1E0A3D

triadic

#0A103D #3D0A10 #103D0A

tetradic

#0A103D #3D0A2A #3D370A #0A3D1E

square

#0A103D #3D0A2A #3D370A #0A3D1E

split-complementary

#0A103D #3D1E0A #2A3D0A

monochromatic

#04071A #04071A #0A103D #131E72 #1B2CA6

Accessibility & contrast

On white

18.19

#0A103D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#0A103D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A103D

18.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A103D	#FFFFFF	#000000	##FFFFFF
##0A103D	1.00	18.19	1.15	18.19
#FFFFFF	18.19	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183E

Deuteranopia (green-blind)

#00133C

Tritanopia (blue-blind)

#001C24

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #0a103d;
/* rgb */ color: rgb(10, 16, 61);
/* oklch */ color: oklch(20.4% 0.086 270.7);

Tailwind

colors: {
  custom: {
    50: '#524e73',
    500: '#0a103d',
    950: '#000000',
  },
}

SCSS

$custom: #0a103d;
$custom-light: #524e73;
$custom-dark: #000000;

JSON

{
  "hex": "#0a103d",
  "rgb": {
    "r": 10,
    "g": 16,
    "b": 61
  },
  "hsl": {
    "h": 232.941,
    "s": 71.831,
    "l": 13.922
  },
  "oklch": {
    "l": 0.20404,
    "c": 0.08566,
    "h": 270.7
  },
  "luminance": 0.00772
}

Semantic roles & 50–950 ramp

primary

#0A103D

secondary

#7A7128

accent

#D939EF

background

#F4F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #0A103D

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

Preview Lab → · Contrast checker → · Palette generator →