#0A0331#0A0331

#0A0331 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.2% C 0.087 H 279.5°. Best body text is #FFFFFF at 19.62:1 contrast (WCAG AA passes).

Color values

HEX	#0A0331
RGB	rgb(10, 3, 49)
HSL	hsl(249, 88%, 10%)
HSV	hsv(249, 94%, 19%)
CMYK	cmyk(79.6%, 93.9%, 0%, 80.8%)
CIE-LAB	lab(3.17, 15.48, -26.91)
CIE-LCH	lch(3.17, 31.05, 299.91°)
OKLab	oklab(16.19% 0.0144 -0.0854)
OKLCH	oklch(16.19% 0.087 279.5)
XYZ	xyz(0.7119, 0.3513, 2.9354)
Luminance	0.0035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight

#03012D

ΔE00 1.92

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0331 #2A3103

analogous

#031331 #0A0331 #210331

triadic

#0A0331 #310A03 #03310A

tetradic

#0A0331 #310313 #2A3103 #033121

square

#0A0331 #310313 #2A3103 #033121

split-complementary

#0A0331 #312103 #133103

monochromatic

#06021D #06021D #0A0331 #16076B #220AA4

Accessibility & contrast

On white

19.62

#0A0331 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#0A0331 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0331

19.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0331	#FFFFFF	#000000	##FFFFFF
##0A0331	1.00	19.62	1.07	19.62
#FFFFFF	19.62	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D32

Deuteranopia (green-blind)

#000A30

Tritanopia (blue-blind)

#001019

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #0a0331;
/* rgb */ color: rgb(10, 3, 49);
/* oklch */ color: oklch(16.2% 0.087 279.5);

Tailwind

colors: {
  custom: {
    50: '#4e4769',
    500: '#0a0331',
    950: '#000000',
  },
}

SCSS

$custom: #0a0331;
$custom-light: #4e4769;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0331",
  "rgb": {
    "r": 10,
    "g": 3,
    "b": 49
  },
  "hsl": {
    "h": 249.13,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.16191,
    "c": 0.08656,
    "h": 279.5
  },
  "luminance": 0.00351
}

Semantic roles & 50–950 ramp

primary

#0A0331

secondary

#67741B

accent

#FF29DE

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#020006

muted

#78777A

Preview Lab

Preview with #0A0331

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

Preview Lab → · Contrast checker → · Palette generator →