#0B1F4A#0B1F4A

#0B1F4A is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.084 H 263.0°. Best body text is #FFFFFF at 16.04:1 contrast (WCAG AA passes).

Color values

HEX	#0B1F4A
RGB	rgb(11, 31, 74)
HSL	hsl(221, 74%, 17%)
HSV	hsv(221, 85%, 29%)
CMYK	cmyk(85.1%, 58.1%, 0%, 71%)
CIE-LAB	lab(12.89, 10.29, -29.05)
CIE-LCH	lch(12.89, 30.82, 289.50°)
OKLab	oklab(25.27% -0.0103 -0.0837)
OKLCH	oklch(25.27% 0.084 263)
XYZ	xyz(1.8636, 1.5453, 6.6773)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1F4A #4A360B

analogous

#0B3F4A #0B1F4A #160B4A

triadic

#0B1F4A #4A0B1F #1F4A0B

tetradic

#0B1F4A #4A0B3F #4A360B #0B4A16

square

#0B1F4A #4A0B3F #4A360B #0B4A16

split-complementary

#0B1F4A #4A160B #3F4A0B

monochromatic

#040B1B #040B1B #0B1F4A #13357F #1B4CB5

Accessibility & contrast

On white

16.04

#0B1F4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#0B1F4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1F4A

16.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1F4A	#FFFFFF	#000000	##FFFFFF
##0B1F4A	1.00	16.04	1.31	16.04
#FFFFFF	16.04	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03244C

Deuteranopia (green-blind)

#001F49

Tritanopia (blue-blind)

#002931

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #0b1f4a;
/* rgb */ color: rgb(11, 31, 74);
/* oklch */ color: oklch(25.3% 0.084 263.0);

Tailwind

colors: {
  custom: {
    50: '#555a7d',
    500: '#0b1f4a',
    950: '#000000',
  },
}

SCSS

$custom: #0b1f4a;
$custom-light: #555a7d;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1f4a",
  "rgb": {
    "r": 11,
    "g": 31,
    "b": 74
  },
  "hsl": {
    "h": 220.952,
    "s": 74.118,
    "l": 16.667
  },
  "oklch": {
    "l": 0.25266,
    "c": 0.0843,
    "h": 263
  },
  "luminance": 0.01546
}

Semantic roles & 50–950 ramp

primary

#0B1F4A

secondary

#86692B

accent

#B637F1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#030309

muted

#78787B

Preview Lab

Preview with #0B1F4A

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

Preview Lab → · Contrast checker → · Palette generator →