#03091B#03091B

#03091B is a very dark, muted blue. Relative luminance 0.003; OKLCH L 14.5% C 0.041 H 263.3°. Best body text is #FFFFFF at 19.83:1 contrast (WCAG AA passes).

Color values

HEX	#03091B
RGB	rgb(3, 9, 27)
HSL	hsl(225, 80%, 6%)
HSV	hsv(225, 89%, 11%)
CMYK	cmyk(88.9%, 66.7%, 0%, 89.4%)
CIE-LAB	lab(2.65, 2.20, -10.76)
CIE-LCH	lch(2.65, 10.98, 281.57°)
OKLab	oklab(14.47% -0.0048 -0.0409)
OKLCH	oklch(14.47% 0.041 263.3)
XYZ	xyz(0.3330, 0.2938, 1.0759)
Luminance	0.0029 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#03091B #1B1503

analogous

#03151B #03091B #09031B

triadic

#03091B #1B0309 #091B03

tetradic

#03091B #1B0315 #1B1503 #031B09

square

#03091B #1B0315 #1B1503 #031B09

split-complementary

#03091B #1B0903 #151B03

monochromatic

#03091C #03091C #03091C #091B52 #0F2E89

Accessibility & contrast

On white

19.83

#03091B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#03091B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #03091B

19.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##03091B	#FFFFFF	#000000	##FFFFFF
##03091B	1.00	19.83	1.06	19.83
#FFFFFF	19.83	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#030B1C

Deuteranopia (green-blind)

#01091B

Tritanopia (blue-blind)

#000D10

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #03091b;
/* rgb */ color: rgb(3, 9, 27);
/* oklch */ color: oklch(14.5% 0.041 263.3);

Tailwind

colors: {
  custom: {
    50: '#474b57',
    500: '#03091b',
    950: '#000000',
  },
}

SCSS

$custom: #03091b;
$custom-light: #474b57;
$custom-dark: #000000;

JSON

{
  "hex": "#03091b",
  "rgb": {
    "r": 3,
    "g": 9,
    "b": 27
  },
  "hsl": {
    "h": 225,
    "s": 80,
    "l": 5.882
  },
  "oklch": {
    "l": 0.1447,
    "c": 0.04117,
    "h": 263.3
  },
  "luminance": 0.00294
}

Semantic roles & 50–950 ramp

primary

#03091B

secondary

#5F4E1B

accent

#C531F6

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000103

muted

#777778

Preview Lab

Preview with #03091B

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

Preview Lab → · Contrast checker → · Palette generator →