#0B173F#0B173F

#0B173F is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.3% C 0.078 H 267.1°. Best body text is #FFFFFF at 17.38:1 contrast (WCAG AA passes).

Color values

HEX	#0B173F
RGB	rgb(11, 23, 63)
HSL	hsl(226, 70%, 15%)
HSV	hsv(226, 83%, 25%)
CMYK	cmyk(82.5%, 63.5%, 0%, 75.3%)
CIE-LAB	lab(9.34, 11.59, -27.12)
CIE-LCH	lch(9.34, 29.49, 293.15°)
OKLab	oklab(22.28% -0.004 -0.0781)
OKLCH	oklch(22.28% 0.078 267.1)
XYZ	xyz(1.3413, 1.0427, 4.8322)
Luminance	0.0104 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B173F #3F330B

analogous

#0B313F #0B173F #190B3F

triadic

#0B173F #3F0B17 #173F0B

tetradic

#0B173F #3F0B31 #3F330B #0B3F19

square

#0B173F #3F0B31 #3F330B #0B3F19

split-complementary

#0B173F #3F190B #313F0B

monochromatic

#050A1A #050A1A #0B173F #142A73 #1D3DA7

Accessibility & contrast

On white

17.38

#0B173F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0B173F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B173F

17.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B173F	#FFFFFF	#000000	##FFFFFF
##0B173F	1.00	17.38	1.21	17.38
#FFFFFF	17.38	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D40

Deuteranopia (green-blind)

#00183E

Tritanopia (blue-blind)

#002128

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0b173f;
/* rgb */ color: rgb(11, 23, 63);
/* oklch */ color: oklch(22.3% 0.078 267.1);

Tailwind

colors: {
  custom: {
    50: '#535374',
    500: '#0b173f',
    950: '#000000',
  },
}

SCSS

$custom: #0b173f;
$custom-light: #535374;
$custom-dark: #000000;

JSON

{
  "hex": "#0b173f",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 63
  },
  "hsl": {
    "h": 226.154,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.22277,
    "c": 0.07824,
    "h": 267.1
  },
  "luminance": 0.01043
}

Semantic roles & 50–950 ramp

primary

#0B173F

secondary

#7C692A

accent

#C43BED

background

#F4F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0B173F

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

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