#0B1F37#0B1F37

#0B1F37 is a very dark, muted cyan. Relative luminance 0.013; OKLCH L 23.7% C 0.053 H 254.4°. Best body text is #FFFFFF at 16.60:1 contrast (WCAG AA passes).

Color values

HEX	#0B1F37
RGB	rgb(11, 31, 55)
HSL	hsl(213, 67%, 13%)
HSV	hsv(213, 80%, 22%)
CMYK	cmyk(80%, 43.6%, 0%, 78.4%)
CIE-LAB	lab(11.46, 1.73, -18.01)
CIE-LCH	lch(11.46, 18.10, 275.50°)
OKLab	oklab(23.7% -0.0143 -0.0512)
OKLCH	oklch(23.7% 0.053 254.4)
XYZ	xyz(1.3173, 1.3268, 3.8004)
Luminance	0.0133 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1F37 #37230B

analogous

#0B3537 #0B1F37 #0D0B37

triadic

#0B1F37 #370B1F #1F370B

tetradic

#0B1F37 #370B35 #37230B #0B370D

square

#0B1F37 #370B35 #37230B #0B370D

split-complementary

#0B1F37 #370D0B #35370B

monochromatic

#050E1A #050E1A #0B1F37 #153C6A #1F589D

Accessibility & contrast

On white

16.60

#0B1F37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#0B1F37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1F37

16.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1F37	#FFFFFF	#000000	##FFFFFF
##0B1F37	1.00	16.60	1.27	16.60
#FFFFFF	16.60	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#142138

Deuteranopia (green-blind)

#0E1D37

Tritanopia (blue-blind)

#002528

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #0b1f37;
/* rgb */ color: rgb(11, 31, 55);
/* oklch */ color: oklch(23.7% 0.053 254.4);

Tailwind

colors: {
  custom: {
    50: '#505a6e',
    500: '#0b1f37',
    950: '#000000',
  },
}

SCSS

$custom: #0b1f37;
$custom-light: #505a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1f37",
  "rgb": {
    "r": 11,
    "g": 31,
    "b": 55
  },
  "hsl": {
    "h": 212.727,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.23703,
    "c": 0.05318,
    "h": 254.4
  },
  "luminance": 0.01327
}

Semantic roles & 50–950 ramp

primary

#0B1F37

secondary

#74522A

accent

#9C3EEA

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020307

muted

#78787A

Preview Lab

Preview with #0B1F37

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

Preview Lab → · Contrast checker → · Palette generator →