#0B173E#0B173E

#0B173E is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.2% C 0.077 H 267.0°. Best body text is #FFFFFF at 17.41:1 contrast (WCAG AA passes).

Color values

HEX	#0B173E
RGB	rgb(11, 23, 62)
HSL	hsl(226, 70%, 14%)
HSV	hsv(226, 82%, 24%)
CMYK	cmyk(82.3%, 62.9%, 0%, 75.7%)
CIE-LAB	lab(9.25, 11.15, -26.55)
CIE-LCH	lch(9.25, 28.80, 292.77°)
OKLab	oklab(22.18% -0.004 -0.0765)
OKLCH	oklch(22.18% 0.077 267)
XYZ	xyz(1.3136, 1.0316, 4.6864)
Luminance	0.0103 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B173E #3E320B

analogous

#0B313E #0B173E #190B3E

triadic

#0B173E #3E0B17 #173E0B

tetradic

#0B173E #3E0B31 #3E320B #0B3E19

square

#0B173E #3E0B31 #3E320B #0B3E19

split-complementary

#0B173E #3E190B #313E0B

monochromatic

#050A1A #050A1A #0B173E #142A72 #1D3EA6

Accessibility & contrast

On white

17.41

#0B173E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0B173E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B173E

17.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B173E	#FFFFFF	#000000	##FFFFFF
##0B173E	1.00	17.41	1.21	17.41
#FFFFFF	17.41	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C3F

Deuteranopia (green-blind)

#00183D

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0b173e;
/* rgb */ color: rgb(11, 23, 62);
/* oklch */ color: oklch(22.2% 0.077 267.0);

Tailwind

colors: {
  custom: {
    50: '#525374',
    500: '#0b173e',
    950: '#000000',
  },
}

SCSS

$custom: #0b173e;
$custom-light: #525374;
$custom-dark: #000000;

JSON

{
  "hex": "#0b173e",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 62
  },
  "hsl": {
    "h": 225.882,
    "s": 69.863,
    "l": 14.314
  },
  "oklch": {
    "l": 0.22181,
    "c": 0.07659,
    "h": 267
  },
  "luminance": 0.01032
}

Semantic roles & 50–950 ramp

primary

#0B173E

secondary

#7B682A

accent

#C33BED

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0B173E

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

Preview Lab → · Contrast checker → · Palette generator →