#0B1841#0B1841

#0B1841 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.7% C 0.080 H 266.6°. Best body text is #FFFFFF at 17.20:1 contrast (WCAG AA passes).

Color values

HEX	#0B1841
RGB	rgb(11, 24, 65)
HSL	hsl(226, 71%, 15%)
HSV	hsv(226, 83%, 25%)
CMYK	cmyk(83.1%, 63.1%, 0%, 74.5%)
CIE-LAB	lab(9.84, 11.70, -27.72)
CIE-LCH	lch(9.84, 30.09, 292.89°)
OKLab	oklab(22.71% -0.0048 -0.0799)
OKLCH	oklch(22.71% 0.08 266.6)
XYZ	xyz(1.4184, 1.1059, 5.1387)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1841 #41340B

analogous

#0B3341 #0B1841 #190B41

triadic

#0B1841 #410B18 #18410B

tetradic

#0B1841 #410B33 #41340B #0B4119

square

#0B1841 #410B33 #41340B #0B4119

split-complementary

#0B1841 #41190B #33410B

monochromatic

#040A1A #040A1A #0B1841 #142B75 #1D3FAA

Accessibility & contrast

On white

17.20

#0B1841 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#0B1841 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1841

17.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1841	#FFFFFF	#000000	##FFFFFF
##0B1841	1.00	17.20	1.22	17.20
#FFFFFF	17.20	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E42

Deuteranopia (green-blind)

#001940

Tritanopia (blue-blind)

#002229

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #0b1841;
/* rgb */ color: rgb(11, 24, 65);
/* oklch */ color: oklch(22.7% 0.080 266.6);

Tailwind

colors: {
  custom: {
    50: '#535476',
    500: '#0b1841',
    950: '#000000',
  },
}

SCSS

$custom: #0b1841;
$custom-light: #535476;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1841",
  "rgb": {
    "r": 11,
    "g": 24,
    "b": 65
  },
  "hsl": {
    "h": 225.556,
    "s": 71.053,
    "l": 14.902
  },
  "oklch": {
    "l": 0.22712,
    "c": 0.08002,
    "h": 266.6
  },
  "luminance": 0.01106
}

Semantic roles & 50–950 ramp

primary

#0B1841

secondary

#7E6A2A

accent

#C33AEE

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0B1841

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

Preview Lab → · Contrast checker → · Palette generator →