#0B283F#0B283F

#0B283F is a dark, muted cyan. Relative luminance 0.019; OKLCH L 26.8% C 0.055 H 246.0°. Best body text is #FFFFFF at 15.11:1 contrast (WCAG AA passes).

Color values

HEX	#0B283F
RGB	rgb(11, 40, 63)
HSL	hsl(207, 70%, 15%)
HSV	hsv(207, 83%, 25%)
CMYK	cmyk(82.5%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(15.21, -1.40, -17.73)
CIE-LCH	lch(15.21, 17.79, 265.48°)
OKLab	oklab(26.81% -0.0224 -0.0503)
OKLCH	oklch(26.81% 0.055 246)
XYZ	xyz(1.7937, 1.9474, 4.9830)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B283F #3F220B

analogous

#0B3F3C #0B283F #0B0E3F

triadic

#0B283F #3F0B28 #283F0B

tetradic

#0B283F #3C0B3F #3F220B #0E3F0B

square

#0B283F #3C0B3F #3F220B #0E3F0B

split-complementary

#0B283F #3F0B0E #3F3C0B

monochromatic

#05111A #05111A #0B283F #144973 #1D6AA7

Accessibility & contrast

On white

15.11

#0B283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#0B283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B283F

15.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B283F	#FFFFFF	#000000	##FFFFFF
##0B283F	1.00	15.11	1.39	15.11
#FFFFFF	15.11	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E2940

Deuteranopia (green-blind)

#16243F

Tritanopia (blue-blind)

#002E30

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #0b283f;
/* rgb */ color: rgb(11, 40, 63);
/* oklch */ color: oklch(26.8% 0.055 246.0);

Tailwind

colors: {
  custom: {
    50: '#526174',
    500: '#0b283f',
    950: '#000000',
  },
}

SCSS

$custom: #0b283f;
$custom-light: #526174;
$custom-dark: #000000;

JSON

{
  "hex": "#0b283f",
  "rgb": {
    "r": 11,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 206.538,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.26807,
    "c": 0.05502,
    "h": 246
  },
  "luminance": 0.01948
}

Semantic roles & 50–950 ramp

primary

#0B283F

secondary

#7C4E2A

accent

#8A3BED

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#030508

muted

#78797B

Preview Lab

Preview with #0B283F

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

Preview Lab → · Contrast checker → · Palette generator →