#0B173C#0B173C

#0B173C is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.0% C 0.073 H 266.7°. Best body text is #FFFFFF at 17.47:1 contrast (WCAG AA passes).

Color values

HEX	#0B173C
RGB	rgb(11, 23, 60)
HSL	hsl(225, 69%, 14%)
HSV	hsv(225, 82%, 24%)
CMYK	cmyk(81.7%, 61.7%, 0%, 76.5%)
CIE-LAB	lab(9.08, 10.24, -25.41)
CIE-LCH	lch(9.08, 27.40, 291.95°)
OKLab	oklab(21.99% -0.0042 -0.0731)
OKLCH	oklch(21.99% 0.073 266.7)
XYZ	xyz(1.2597, 1.0101, 4.4027)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B173C #3C300B

analogous

#0B303C #0B173C #180B3C

triadic

#0B173C #3C0B17 #173C0B

tetradic

#0B173C #3C0B30 #3C300B #0B3C18

square

#0B173C #3C0B30 #3C300B #0B3C18

split-complementary

#0B173C #3C180B #303C0B

monochromatic

#050A1A #050A1A #0B173C #142B70 #1E3FA3

Accessibility & contrast

On white

17.47

#0B173C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0B173C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B173C

17.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B173C	#FFFFFF	#000000	##FFFFFF
##0B173C	1.00	17.47	1.20	17.47
#FFFFFF	17.47	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011C3D

Deuteranopia (green-blind)

#00173B

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0b173c;
/* rgb */ color: rgb(11, 23, 60);
/* oklch */ color: oklch(22.0% 0.073 266.7);

Tailwind

colors: {
  custom: {
    50: '#525372',
    500: '#0b173c',
    950: '#000000',
  },
}

SCSS

$custom: #0b173c;
$custom-light: #525372;
$custom-dark: #000000;

JSON

{
  "hex": "#0b173c",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 60
  },
  "hsl": {
    "h": 225.306,
    "s": 69.014,
    "l": 13.922
  },
  "oklch": {
    "l": 0.21991,
    "c": 0.07325,
    "h": 266.7
  },
  "luminance": 0.0101
}

Semantic roles & 50–950 ramp

primary

#0B173C

secondary

#79652A

accent

#C13CEC

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #0B173C

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

Preview Lab → · Contrast checker → · Palette generator →