#0A0339#0A0339

#0A0339 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.3% C 0.098 H 276.5°. Best body text is #FFFFFF at 19.35:1 contrast (WCAG AA passes).

Color values

HEX	#0A0339
RGB	rgb(10, 3, 57)
HSL	hsl(248, 90%, 12%)
HSV	hsv(248, 95%, 22%)
CMYK	cmyk(82.5%, 94.7%, 0%, 77.6%)
CIE-LAB	lab(3.84, 20.11, -31.75)
CIE-LCH	lch(3.84, 37.58, 302.35°)
OKLab	oklab(17.32% 0.0111 -0.0969)
OKLCH	oklch(17.32% 0.098 276.5)
XYZ	xyz(0.8960, 0.4250, 3.9049)
Luminance	0.0043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0339 #323903

analogous

#031739 #0A0339 #250339

triadic

#0A0339 #390A03 #03390A

tetradic

#0A0339 #390317 #323903 #033925

square

#0A0339 #390317 #323903 #033925

split-complementary

#0A0339 #392503 #173903

monochromatic

#05021D #05021D #0A0339 #140673 #1E09AD

Accessibility & contrast

On white

19.35

#0A0339 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#0A0339 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0339

19.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0339	#FFFFFF	#000000	##FFFFFF
##0A0339	1.00	19.35	1.09	19.35
#FFFFFF	19.35	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00103A

Deuteranopia (green-blind)

#000B38

Tritanopia (blue-blind)

#00131E

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #0a0339;
/* rgb */ color: rgb(10, 3, 57);
/* oklch */ color: oklch(17.3% 0.098 276.5);

Tailwind

colors: {
  custom: {
    50: '#514770',
    500: '#0a0339',
    950: '#000000',
  },
}

SCSS

$custom: #0a0339;
$custom-light: #514770;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0339",
  "rgb": {
    "r": 10,
    "g": 3,
    "b": 57
  },
  "hsl": {
    "h": 247.778,
    "s": 90,
    "l": 11.765
  },
  "oklch": {
    "l": 0.17317,
    "c": 0.09759,
    "h": 276.5
  },
  "luminance": 0.00425
}

Semantic roles & 50–950 ramp

primary

#0A0339

secondary

#6F7C1C

accent

#FF29E3

background

#F4F3F6

surface

#E7E5EC

border

#C3C1C7

text

#020007

muted

#78777A

Preview Lab

Preview with #0A0339

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

Preview Lab → · Contrast checker → · Palette generator →