#0B1D4A#0B1D4A

#0B1D4A is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.8% C 0.087 H 264.4°. Best body text is #FFFFFF at 16.29:1 contrast (WCAG AA passes).

Color values

HEX	#0B1D4A
RGB	rgb(11, 29, 74)
HSL	hsl(223, 74%, 17%)
HSV	hsv(223, 85%, 29%)
CMYK	cmyk(85.1%, 60.8%, 0%, 71%)
CIE-LAB	lab(12.25, 11.84, -30.10)
CIE-LCH	lch(12.25, 32.34, 291.47°)
OKLab	oklab(24.78% -0.0085 -0.0868)
OKLCH	oklch(24.78% 0.087 264.4)
XYZ	xyz(1.8130, 1.4441, 6.6604)
Luminance	0.0144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1D4A #4A380B

analogous

#0B3D4A #0B1D4A #190B4A

triadic

#0B1D4A #4A0B1D #1D4A0B

tetradic

#0B1D4A #4A0B3D #4A380B #0B4A19

square

#0B1D4A #4A0B3D #4A380B #0B4A19

split-complementary

#0B1D4A #4A190B #3D4A0B

monochromatic

#040A1B #040A1B #0B1D4A #13327F #1B47B5

Accessibility & contrast

On white

16.29

#0B1D4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#0B1D4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1D4A

16.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1D4A	#FFFFFF	#000000	##FFFFFF
##0B1D4A	1.00	16.29	1.29	16.29
#FFFFFF	16.29	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234C

Deuteranopia (green-blind)

#001D49

Tritanopia (blue-blind)

#002830

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #0b1d4a;
/* rgb */ color: rgb(11, 29, 74);
/* oklch */ color: oklch(24.8% 0.087 264.4);

Tailwind

colors: {
  custom: {
    50: '#56587d',
    500: '#0b1d4a',
    950: '#000000',
  },
}

SCSS

$custom: #0b1d4a;
$custom-light: #56587d;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1d4a",
  "rgb": {
    "r": 11,
    "g": 29,
    "b": 74
  },
  "hsl": {
    "h": 222.857,
    "s": 74.118,
    "l": 16.667
  },
  "oklch": {
    "l": 0.24777,
    "c": 0.08721,
    "h": 264.4
  },
  "luminance": 0.01444
}

Semantic roles & 50–950 ramp

primary

#0B1D4A

secondary

#866C2B

accent

#BC37F1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#030309

muted

#78787B

Preview Lab

Preview with #0B1D4A

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

Preview Lab → · Contrast checker → · Palette generator →