#0B3F52#0B3F52

#0B3F52 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.061 H 228.0°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#0B3F52
RGB	rgb(11, 63, 82)
HSL	hsl(196, 76%, 18%)
HSV	hsv(196, 87%, 32%)
CMYK	cmyk(86.6%, 23.2%, 0%, 67.8%)
CIE-LAB	lab(24.43, -8.92, -16.16)
CIE-LCH	lch(24.43, 18.46, 241.08°)
OKLab	oklab(34.48% -0.0409 -0.0454)
OKLCH	oklch(34.48% 0.061 228)
XYZ	xyz(3.4379, 4.2349, 8.6172)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3F52 #521E0B

analogous

#0B5241 #0B3F52 #0B1B52

triadic

#0B3F52 #520B3F #3F520B

tetradic

#0B3F52 #410B52 #521E0B #1B520B

square

#0B3F52 #410B52 #521E0B #1B520B

split-complementary

#0B3F52 #520B1B #52410B

monochromatic

#04151B #04161C #0B3F52 #126888 #1992BE

Accessibility & contrast

On white

11.37

#0B3F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#0B3F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3F52

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3F52	#FFFFFF	#000000	##FFFFFF
##0B3F52	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353E53

Deuteranopia (green-blind)

#2C3752

Tritanopia (blue-blind)

#004445

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #0b3f52;
/* rgb */ color: rgb(11, 63, 82);
/* oklch */ color: oklch(34.5% 0.061 228.0);

Tailwind

colors: {
  custom: {
    50: '#587482',
    500: '#0b3f52',
    950: '#000000',
  },
}

SCSS

$custom: #0b3f52;
$custom-light: #587482;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3f52",
  "rgb": {
    "r": 11,
    "g": 63,
    "b": 82
  },
  "hsl": {
    "h": 196.056,
    "s": 76.344,
    "l": 18.235
  },
  "oklch": {
    "l": 0.34476,
    "c": 0.06114,
    "h": 228
  },
  "luminance": 0.04235
}

Semantic roles & 50–950 ramp

primary

#0B3F52

secondary

#8E452B

accent

#6835F3

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #0B3F52

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

Preview Lab → · Contrast checker → · Palette generator →