#0B3440#0B3440

#0B3440 is a dark, muted cyan. Relative luminance 0.029; OKLCH L 30.3% C 0.049 H 221.6°. Best body text is #FFFFFF at 13.30:1 contrast (WCAG AA passes).

Color values

HEX	#0B3440
RGB	rgb(11, 52, 64)
HSL	hsl(194, 71%, 15%)
HSV	hsv(194, 83%, 25%)
CMYK	cmyk(82.8%, 18.8%, 0%, 74.9%)
CIE-LAB	lab(19.63, -9.13, -11.54)
CIE-LCH	lch(19.63, 14.72, 231.66°)
OKLab	oklab(30.34% -0.0363 -0.0323)
OKLCH	oklch(30.34% 0.049 221.6)
XYZ	xyz(2.2910, 2.8970, 5.2879)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3440 #40170B

analogous

#0B4032 #0B3440 #0B1A40

triadic

#0B3440 #400B34 #34400B

tetradic

#0B3440 #320B40 #40170B #1A400B

square

#0B3440 #320B40 #40170B #1A400B

split-complementary

#0B3440 #400B1A #40320B

monochromatic

#04151A #04151A #0B3440 #145E74 #1D89A8

Accessibility & contrast

On white

13.30

#0B3440 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#0B3440 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3440

13.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3440	#FFFFFF	#000000	##FFFFFF
##0B3440	1.00	13.30	1.58	13.30
#FFFFFF	13.30	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3241

Deuteranopia (green-blind)

#262D40

Tritanopia (blue-blind)

#003838

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #0b3440;
/* rgb */ color: rgb(11, 52, 64);
/* oklch */ color: oklch(30.3% 0.049 221.6);

Tailwind

colors: {
  custom: {
    50: '#536b74',
    500: '#0b3440',
    950: '#000000',
  },
}

SCSS

$custom: #0b3440;
$custom-light: #536b74;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3440",
  "rgb": {
    "r": 11,
    "g": 52,
    "b": 64
  },
  "hsl": {
    "h": 193.585,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.30341,
    "c": 0.04861,
    "h": 221.6
  },
  "luminance": 0.02897
}

Semantic roles & 50–950 ramp

primary

#0B3440

secondary

#7D3D2A

accent

#633AED

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#030608

muted

#787A7B

Preview Lab

Preview with #0B3440

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

Preview Lab → · Contrast checker → · Palette generator →