#0B3140#0B3140

#0B3140 is a dark, muted cyan. Relative luminance 0.026; OKLCH L 29.5% C 0.050 H 228.6°. Best body text is #FFFFFF at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#0B3140
RGB	rgb(11, 49, 64)
HSL	hsl(197, 71%, 15%)
HSV	hsv(197, 83%, 25%)
CMYK	cmyk(82.8%, 23.4%, 0%, 74.9%)
CIE-LAB	lab(18.53, -7.18, -13.23)
CIE-LCH	lch(18.53, 15.06, 241.52°)
OKLab	oklab(29.46% -0.0327 -0.0371)
OKLCH	oklch(29.46% 0.05 228.6)
XYZ	xyz(2.1614, 2.6377, 5.2447)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3140 #401A0B

analogous

#0B4035 #0B3140 #0B1740

triadic

#0B3140 #400B31 #31400B

tetradic

#0B3140 #350B40 #401A0B #17400B

square

#0B3140 #350B40 #401A0B #17400B

split-complementary

#0B3140 #400B17 #40350B

monochromatic

#04141A #04141A #0B3140 #145974 #1D81A8

Accessibility & contrast

On white

13.75

#0B3140 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#0B3140 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3140

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3140	#FFFFFF	#000000	##FFFFFF
##0B3140	1.00	13.75	1.53	13.75
#FFFFFF	13.75	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293041

Deuteranopia (green-blind)

#222B40

Tritanopia (blue-blind)

#003536

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #0b3140;
/* rgb */ color: rgb(11, 49, 64);
/* oklch */ color: oklch(29.5% 0.050 228.6);

Tailwind

colors: {
  custom: {
    50: '#536974',
    500: '#0b3140',
    950: '#000000',
  },
}

SCSS

$custom: #0b3140;
$custom-light: #536974;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3140",
  "rgb": {
    "r": 11,
    "g": 49,
    "b": 64
  },
  "hsl": {
    "h": 196.981,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.29462,
    "c": 0.0495,
    "h": 228.6
  },
  "luminance": 0.02638
}

Semantic roles & 50–950 ramp

primary

#0B3140

secondary

#7D412A

accent

#6D3AED

background

#F5F6F7

surface

#E8EBED

border

#C4C6C8

text

#030608

muted

#787A7B

Preview Lab

Preview with #0B3140

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

Preview Lab → · Contrast checker → · Palette generator →