#0B233B#0B233B

#0B233B is a dark, muted cyan. Relative luminance 0.016; OKLCH L 25.1% C 0.055 H 250.9°. Best body text is #FFFFFF at 15.94:1 contrast (WCAG AA passes).

Color values

HEX	#0B233B
RGB	rgb(11, 35, 59)
HSL	hsl(210, 69%, 14%)
HSV	hsv(210, 81%, 23%)
CMYK	cmyk(81.4%, 40.7%, 0%, 76.9%)
CIE-LAB	lab(13.16, 0.50, -18.16)
CIE-LCH	lch(13.16, 18.17, 271.58°)
OKLab	oklab(25.12% -0.0178 -0.0516)
OKLCH	oklch(25.12% 0.055 250.9)
XYZ	xyz(1.5282, 1.5888, 4.3630)
Luminance	0.0159 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B233B #3B230B

analogous

#0B3B3B #0B233B #0B0B3B

triadic

#0B233B #3B0B23 #233B0B

tetradic

#0B233B #3B0B3B #3B230B #0B3B0B

square

#0B233B #3B0B3B #3B230B #0B3B0B

split-complementary

#0B233B #3B0B0B #3B3B0B

monochromatic

#050F1A #050F1A #0B233B #15426F #1E60A2

Accessibility & contrast

On white

15.94

#0B233B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#0B233B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B233B

15.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B233B	#FFFFFF	#000000	##FFFFFF
##0B233B	1.00	15.94	1.32	15.94
#FFFFFF	15.94	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18243C

Deuteranopia (green-blind)

#11203B

Tritanopia (blue-blind)

#00292C

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #0b233b;
/* rgb */ color: rgb(11, 35, 59);
/* oklch */ color: oklch(25.1% 0.055 250.9);

Tailwind

colors: {
  custom: {
    50: '#515d71',
    500: '#0b233b',
    950: '#000000',
  },
}

SCSS

$custom: #0b233b;
$custom-light: #515d71;
$custom-dark: #000000;

JSON

{
  "hex": "#0b233b",
  "rgb": {
    "r": 11,
    "g": 35,
    "b": 59
  },
  "hsl": {
    "h": 210,
    "s": 68.571,
    "l": 13.725
  },
  "oklch": {
    "l": 0.25118,
    "c": 0.05459,
    "h": 250.9
  },
  "luminance": 0.01589
}

Semantic roles & 50–950 ramp

primary

#0B233B

secondary

#78512A

accent

#943CEB

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #0B233B

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

Preview Lab → · Contrast checker → · Palette generator →