#0B172C#0B172C

#0B172C is a very dark, muted blue. Relative luminance 0.009; OKLCH L 20.6% C 0.045 H 260.9°. Best body text is #FFFFFF at 17.90:1 contrast (WCAG AA passes).

Color values

HEX	#0B172C
RGB	rgb(11, 23, 44)
HSL	hsl(218, 60%, 11%)
HSV	hsv(218, 75%, 17%)
CMYK	cmyk(75%, 47.7%, 0%, 82.7%)
CIE-LAB	lab(7.82, 3.07, -15.79)
CIE-LCH	lch(7.82, 16.09, 280.99°)
OKLab	oklab(20.63% -0.0072 -0.0449)
OKLCH	oklch(20.63% 0.045 260.9)
XYZ	xyz(0.8989, 0.8657, 2.5021)
Luminance	0.0087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B172C #2C200B

analogous

#0B272C #0B172C #0F0B2C

triadic

#0B172C #2C0B17 #172C0B

tetradic

#0B172C #2C0B27 #2C200B #0B2C0F

square

#0B172C #2C0B27 #2C200B #0B2C0F

split-complementary

#0B172C #2C0F0B #272C0B

monochromatic

#060D18 #060D18 #0B172C #17315D #234A8E

Accessibility & contrast

On white

17.90

#0B172C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#0B172C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B172C

17.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B172C	#FFFFFF	#000000	##FFFFFF
##0B172C	1.00	17.90	1.17	17.90
#FFFFFF	17.90	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E192D

Deuteranopia (green-blind)

#09162C

Tritanopia (blue-blind)

#001C1F

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #0b172c;
/* rgb */ color: rgb(11, 23, 44);
/* oklch */ color: oklch(20.6% 0.045 260.9);

Tailwind

colors: {
  custom: {
    50: '#4e5365',
    500: '#0b172c',
    950: '#000000',
  },
}

SCSS

$custom: #0b172c;
$custom-light: #4e5365;
$custom-dark: #000000;

JSON

{
  "hex": "#0b172c",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 44
  },
  "hsl": {
    "h": 218.182,
    "s": 60,
    "l": 10.784
  },
  "oklch": {
    "l": 0.20626,
    "c": 0.04544,
    "h": 260.9
  },
  "luminance": 0.00866
}

Semantic roles & 50–950 ramp

primary

#0B172C

secondary

#68522B

accent

#AA45E3

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #0B172C

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

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