#0B283D#0B283D

#0B283D is a dark, muted cyan. Relative luminance 0.019; OKLCH L 26.7% C 0.052 H 243.7°. Best body text is #FFFFFF at 15.16:1 contrast (WCAG AA passes).

Color values

HEX	#0B283D
RGB	rgb(11, 40, 61)
HSL	hsl(205, 69%, 14%)
HSV	hsv(205, 82%, 24%)
CMYK	cmyk(82%, 34.4%, 0%, 76.1%)
CIE-LAB	lab(15.09, -2.27, -16.52)
CIE-LCH	lch(15.09, 16.68, 262.19°)
OKLab	oklab(26.68% -0.0231 -0.0467)
OKLCH	oklch(26.68% 0.052 243.7)
XYZ	xyz(1.7388, 1.9255, 4.6940)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B283D #3D200B

analogous

#0B3D39 #0B283D #0B0F3D

triadic

#0B283D #3D0B28 #283D0B

tetradic

#0B283D #390B3D #3D200B #0F3D0B

square

#0B283D #390B3D #3D200B #0F3D0B

split-complementary

#0B283D #3D0B0F #3D390B

monochromatic

#05111A #05111A #0B283D #144A71 #1E6CA5

Accessibility & contrast

On white

15.16

#0B283D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#0B283D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B283D

15.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B283D	#FFFFFF	#000000	##FFFFFF
##0B283D	1.00	15.16	1.39	15.16
#FFFFFF	15.16	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E293E

Deuteranopia (green-blind)

#18243D

Tritanopia (blue-blind)

#002D2F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #0b283d;
/* rgb */ color: rgb(11, 40, 61);
/* oklch */ color: oklch(26.7% 0.052 243.7);

Tailwind

colors: {
  custom: {
    50: '#526172',
    500: '#0b283d',
    950: '#000000',
  },
}

SCSS

$custom: #0b283d;
$custom-light: #526172;
$custom-dark: #000000;

JSON

{
  "hex": "#0b283d",
  "rgb": {
    "r": 11,
    "g": 40,
    "b": 61
  },
  "hsl": {
    "h": 205.2,
    "s": 69.444,
    "l": 14.118
  },
  "oklch": {
    "l": 0.26676,
    "c": 0.05215,
    "h": 243.7
  },
  "luminance": 0.01926
}

Semantic roles & 50–950 ramp

primary

#0B283D

secondary

#7A4C2A

accent

#863CEC

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020508

muted

#78797B

Preview Lab

Preview with #0B283D

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

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