#0B243B#0B243B

#0B243B is a dark, muted cyan. Relative luminance 0.016; OKLCH L 25.4% C 0.053 H 249.1°. Best body text is #FFFFFF at 15.79:1 contrast (WCAG AA passes).

Color values

HEX	#0B243B
RGB	rgb(11, 36, 59)
HSL	hsl(209, 69%, 14%)
HSV	hsv(209, 81%, 23%)
CMYK	cmyk(81.4%, 39%, 0%, 76.9%)
CIE-LAB	lab(13.52, -0.24, -17.59)
CIE-LCH	lch(13.52, 17.59, 269.22°)
OKLab	oklab(25.4% -0.0191 -0.0499)
OKLCH	oklch(25.4% 0.053 249.1)
XYZ	xyz(1.5580, 1.6485, 4.3729)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B243B #3B220B

analogous

#0B3B3A #0B243B #0B0C3B

triadic

#0B243B #3B0B24 #243B0B

tetradic

#0B243B #3A0B3B #3B220B #0C3B0B

square

#0B243B #3A0B3B #3B220B #0C3B0B

split-complementary

#0B243B #3B0B0C #3B3A0B

monochromatic

#05101A #05101A #0B243B #15436F #1E63A2

Accessibility & contrast

On white

15.79

#0B243B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#0B243B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B243B

15.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B243B	#FFFFFF	#000000	##FFFFFF
##0B243B	1.00	15.79	1.33	15.79
#FFFFFF	15.79	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A253C

Deuteranopia (green-blind)

#13213B

Tritanopia (blue-blind)

#00292C

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #0b243b;
/* rgb */ color: rgb(11, 36, 59);
/* oklch */ color: oklch(25.4% 0.053 249.1);

Tailwind

colors: {
  custom: {
    50: '#515e71',
    500: '#0b243b',
    950: '#000000',
  },
}

SCSS

$custom: #0b243b;
$custom-light: #515e71;
$custom-dark: #000000;

JSON

{
  "hex": "#0b243b",
  "rgb": {
    "r": 11,
    "g": 36,
    "b": 59
  },
  "hsl": {
    "h": 208.75,
    "s": 68.571,
    "l": 13.725
  },
  "oklch": {
    "l": 0.25401,
    "c": 0.05342,
    "h": 249.1
  },
  "luminance": 0.01649
}

Semantic roles & 50–950 ramp

primary

#0B243B

secondary

#784F2A

accent

#903CEB

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #0B243B

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

Preview Lab → · Contrast checker → · Palette generator →