#0B3748#0B3748

#0B3748 is a dark, muted cyan. Relative luminance 0.033; OKLCH L 31.6% C 0.055 H 228.7°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#0B3748
RGB	rgb(11, 55, 72)
HSL	hsl(197, 73%, 16%)
HSV	hsv(197, 85%, 28%)
CMYK	cmyk(84.7%, 23.6%, 0%, 71.8%)
CIE-LAB	lab(21.10, -7.85, -14.68)
CIE-LCH	lch(21.10, 16.65, 241.87°)
OKLab	oklab(31.65% -0.0363 -0.0412)
OKLCH	oklch(31.65% 0.055 228.7)
XYZ	xyz(2.6734, 3.2711, 6.6201)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3748 #481C0B

analogous

#0B483B #0B3748 #0B1948

triadic

#0B3748 #480B37 #37480B

tetradic

#0B3748 #3B0B48 #481C0B #19480B

square

#0B3748 #3B0B48 #481C0B #19480B

split-complementary

#0B3748 #480B19 #483B0B

monochromatic

#04141B #04141B #0B3748 #13607D #1B88B2

Accessibility & contrast

On white

12.69

#0B3748 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#0B3748 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3748

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3748	#FFFFFF	#000000	##FFFFFF
##0B3748	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3649

Deuteranopia (green-blind)

#263048

Tritanopia (blue-blind)

#003C3D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #0b3748;
/* rgb */ color: rgb(11, 55, 72);
/* oklch */ color: oklch(31.6% 0.055 228.7);

Tailwind

colors: {
  custom: {
    50: '#556d7b',
    500: '#0b3748',
    950: '#000000',
  },
}

SCSS

$custom: #0b3748;
$custom-light: #556d7b;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3748",
  "rgb": {
    "r": 11,
    "g": 55,
    "b": 72
  },
  "hsl": {
    "h": 196.721,
    "s": 73.494,
    "l": 16.275
  },
  "oklch": {
    "l": 0.31646,
    "c": 0.05491,
    "h": 228.7
  },
  "luminance": 0.03271
}

Semantic roles & 50–950 ramp

primary

#0B3748

secondary

#84432A

accent

#6B38F0

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#030709

muted

#787A7B

Preview Lab

Preview with #0B3748

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

Preview Lab → · Contrast checker → · Palette generator →