#0B3740#0B3740

#0B3740 is a dark, muted cyan. Relative luminance 0.032; OKLCH L 31.2% C 0.049 H 214.5°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#0B3740
RGB	rgb(11, 55, 64)
HSL	hsl(190, 71%, 15%)
HSV	hsv(190, 83%, 25%)
CMYK	cmyk(82.8%, 14.1%, 0%, 74.9%)
CIE-LAB	lab(20.73, -11.02, -9.86)
CIE-LCH	lch(20.73, 14.79, 221.83°)
OKLab	oklab(31.22% -0.04 -0.0275)
OKLCH	oklch(31.22% 0.049 214.5)
XYZ	xyz(2.4292, 3.1734, 5.3340)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3740 #40140B

analogous

#0B402F #0B3740 #0B1C40

triadic

#0B3740 #400B37 #37400B

tetradic

#0B3740 #2F0B40 #40140B #1C400B

square

#0B3740 #2F0B40 #40140B #1C400B

split-complementary

#0B3740 #400B1C #402F0B

monochromatic

#04161A #04161A #0B3740 #146474 #1D91A8

Accessibility & contrast

On white

12.85

#0B3740 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#0B3740 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3740

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3740	#FFFFFF	#000000	##FFFFFF
##0B3740	1.00	12.85	1.63	12.85
#FFFFFF	12.85	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313541

Deuteranopia (green-blind)

#293040

Tritanopia (blue-blind)

#003A3A

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #0b3740;
/* rgb */ color: rgb(11, 55, 64);
/* oklch */ color: oklch(31.2% 0.049 214.5);

Tailwind

colors: {
  custom: {
    50: '#546e74',
    500: '#0b3740',
    950: '#000000',
  },
}

SCSS

$custom: #0b3740;
$custom-light: #546e74;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3740",
  "rgb": {
    "r": 11,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 190.189,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.31224,
    "c": 0.0485,
    "h": 214.5
  },
  "luminance": 0.03174
}

Semantic roles & 50–950 ramp

primary

#0B3740

secondary

#7D382A

accent

#593AED

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#030708

muted

#787A7B

Preview Lab

Preview with #0B3740

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

Preview Lab → · Contrast checker → · Palette generator →