#0A0839#0A0839

#0A0839 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.3% C 0.090 H 274.7°. Best body text is #FFFFFF at 18.97:1 contrast (WCAG AA passes).

Color values

HEX	#0A0839
RGB	rgb(10, 8, 57)
HSL	hsl(242, 75%, 13%)
HSV	hsv(242, 86%, 22%)
CMYK	cmyk(82.5%, 86%, 0%, 77.6%)
CIE-LAB	lab(4.82, 17.98, -30.16)
CIE-LCH	lch(4.82, 35.11, 300.80°)
OKLab	oklab(18.35% 0.0075 -0.09)
OKLCH	oklch(18.35% 0.09 274.7)
XYZ	xyz(0.9503, 0.5335, 3.9230)
Luminance	0.0053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0839 #373908

analogous

#081E39 #0A0839 #220839

triadic

#0A0839 #390A08 #08390A

tetradic

#0A0839 #39081E #373908 #083922

square

#0A0839 #39081E #373908 #083922

split-complementary

#0A0839 #392208 #1E3908

monochromatic

#05041B #05041B #0A0839 #13106F #1D17A4

Accessibility & contrast

On white

18.97

#0A0839 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#0A0839 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0839

18.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0839	#FFFFFF	#000000	##FFFFFF
##0A0839	1.00	18.97	1.11	18.97
#FFFFFF	18.97	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133A

Deuteranopia (green-blind)

#000E38

Tritanopia (blue-blind)

#001620

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #0a0839;
/* rgb */ color: rgb(10, 8, 57);
/* oklch */ color: oklch(18.3% 0.090 274.7);

Tailwind

colors: {
  custom: {
    50: '#514970',
    500: '#0a0839',
    950: '#000000',
  },
}

SCSS

$custom: #0a0839;
$custom-light: #514970;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0839",
  "rgb": {
    "r": 10,
    "g": 8,
    "b": 57
  },
  "hsl": {
    "h": 242.449,
    "s": 75.385,
    "l": 12.745
  },
  "oklch": {
    "l": 0.18347,
    "c": 0.09027,
    "h": 274.7
  },
  "luminance": 0.00534
}

Semantic roles & 50–950 ramp

primary

#0A0839

secondary

#747825

accent

#F236EA

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020107

muted

#78777A

Preview Lab

Preview with #0A0839

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

Preview Lab → · Contrast checker → · Palette generator →