#0A0939#0A0939

#0A0939 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.5% C 0.089 H 274.3°. Best body text is #FFFFFF at 18.90:1 contrast (WCAG AA passes).

Color values

HEX	#0A0939
RGB	rgb(10, 9, 57)
HSL	hsl(241, 73%, 13%)
HSV	hsv(241, 84%, 22%)
CMYK	cmyk(82.5%, 84.2%, 0%, 77.6%)
CIE-LAB	lab(5.02, 17.54, -29.84)
CIE-LCH	lch(5.02, 34.62, 300.44°)
OKLab	oklab(18.54% 0.0067 -0.0887)
OKLCH	oklch(18.54% 0.089 274.3)
XYZ	xyz(0.9611, 0.5552, 3.9266)
Luminance	0.0056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0939 #383909

analogous

#092039 #0A0939 #220939

triadic

#0A0939 #390A09 #09390A

tetradic

#0A0939 #390920 #383909 #093922

square

#0A0939 #390920 #383909 #093922

split-complementary

#0A0939 #392209 #203909

monochromatic

#05041A #05041A #0A0939 #13116E #1D1AA3

Accessibility & contrast

On white

18.90

#0A0939 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#0A0939 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0939

18.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0939	#FFFFFF	#000000	##FFFFFF
##0A0939	1.00	18.90	1.11	18.90
#FFFFFF	18.90	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133A

Deuteranopia (green-blind)

#000F38

Tritanopia (blue-blind)

#001720

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #0a0939;
/* rgb */ color: rgb(10, 9, 57);
/* oklch */ color: oklch(18.5% 0.089 274.3);

Tailwind

colors: {
  custom: {
    50: '#514a70',
    500: '#0a0939',
    950: '#000000',
  },
}

SCSS

$custom: #0a0939;
$custom-light: #514a70;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0939",
  "rgb": {
    "r": 10,
    "g": 9,
    "b": 57
  },
  "hsl": {
    "h": 241.25,
    "s": 72.727,
    "l": 12.941
  },
  "oklch": {
    "l": 0.1854,
    "c": 0.08893,
    "h": 274.3
  },
  "luminance": 0.00555
}

Semantic roles & 50–950 ramp

primary

#0A0939

secondary

#757727

accent

#EF38EC

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #0A0939

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

Preview Lab → · Contrast checker → · Palette generator →