#0B173D#0B173D

#0B173D is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.1% C 0.075 H 266.9°. Best body text is #FFFFFF at 17.44:1 contrast (WCAG AA passes).

Color values

HEX	#0B173D
RGB	rgb(11, 23, 61)
HSL	hsl(226, 69%, 14%)
HSV	hsv(226, 82%, 24%)
CMYK	cmyk(82%, 62.3%, 0%, 76.1%)
CIE-LAB	lab(9.16, 10.70, -25.98)
CIE-LCH	lch(9.16, 28.10, 292.37°)
OKLab	oklab(22.09% -0.0041 -0.0748)
OKLCH	oklch(22.09% 0.075 266.9)
XYZ	xyz(1.2864, 1.0207, 4.5432)
Luminance	0.0102 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B173D #3D310B

analogous

#0B303D #0B173D #180B3D

triadic

#0B173D #3D0B17 #173D0B

tetradic

#0B173D #3D0B30 #3D310B #0B3D18

square

#0B173D #3D0B30 #3D310B #0B3D18

split-complementary

#0B173D #3D180B #303D0B

monochromatic

#050A1A #050A1A #0B173D #142B71 #1E3EA5

Accessibility & contrast

On white

17.44

#0B173D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0B173D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B173D

17.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B173D	#FFFFFF	#000000	##FFFFFF
##0B173D	1.00	17.44	1.20	17.44
#FFFFFF	17.44	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C3E

Deuteranopia (green-blind)

#00183C

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0b173d;
/* rgb */ color: rgb(11, 23, 61);
/* oklch */ color: oklch(22.1% 0.075 266.9);

Tailwind

colors: {
  custom: {
    50: '#525373',
    500: '#0b173d',
    950: '#000000',
  },
}

SCSS

$custom: #0b173d;
$custom-light: #525373;
$custom-dark: #000000;

JSON

{
  "hex": "#0b173d",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 61
  },
  "hsl": {
    "h": 225.6,
    "s": 69.444,
    "l": 14.118
  },
  "oklch": {
    "l": 0.22085,
    "c": 0.07492,
    "h": 266.9
  },
  "luminance": 0.01021
}

Semantic roles & 50–950 ramp

primary

#0B173D

secondary

#7A672A

accent

#C23CEC

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0B173D

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

Preview Lab → · Contrast checker → · Palette generator →