#0B3F4A#0B3F4A

#0B3F4A is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.1% C 0.055 H 215.6°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#0B3F4A
RGB	rgb(11, 63, 74)
HSL	hsl(190, 74%, 17%)
HSV	hsv(190, 85%, 29%)
CMYK	cmyk(85.1%, 14.9%, 0%, 71%)
CIE-LAB	lab(24.06, -12.07, -11.45)
CIE-LCH	lch(24.06, 16.64, 223.48°)
OKLab	oklab(34.06% -0.0446 -0.0319)
OKLCH	oklch(34.06% 0.055 215.6)
XYZ	xyz(3.1510, 4.1202, 7.1064)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3F4A #4A160B

analogous

#0B4A36 #0B3F4A #0B204A

triadic

#0B3F4A #4A0B3F #3F4A0B

tetradic

#0B3F4A #360B4A #4A160B #204A0B

square

#0B3F4A #360B4A #4A160B #204A0B

split-complementary

#0B3F4A #4A0B20 #4A360B

monochromatic

#04171B #04171B #0B3F4A #136C7F #1B9AB5

Accessibility & contrast

On white

11.51

#0B3F4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#0B3F4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3F4A

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3F4A	#FFFFFF	#000000	##FFFFFF
##0B3F4A	1.00	11.51	1.82	11.51
#FFFFFF	11.51	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373D4B

Deuteranopia (green-blind)

#2F374A

Tritanopia (blue-blind)

#004342

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #0b3f4a;
/* rgb */ color: rgb(11, 63, 74);
/* oklch */ color: oklch(34.1% 0.055 215.6);

Tailwind

colors: {
  custom: {
    50: '#56747c',
    500: '#0b3f4a',
    950: '#000000',
  },
}

SCSS

$custom: #0b3f4a;
$custom-light: #56747c;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3f4a",
  "rgb": {
    "r": 11,
    "g": 63,
    "b": 74
  },
  "hsl": {
    "h": 190.476,
    "s": 74.118,
    "l": 16.667
  },
  "oklch": {
    "l": 0.34058,
    "c": 0.05483,
    "h": 215.6
  },
  "luminance": 0.04121
}

Semantic roles & 50–950 ramp

primary

#0B3F4A

secondary

#863B2B

accent

#5737F1

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#030809

muted

#787B7B

Preview Lab

Preview with #0B3F4A

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

Preview Lab → · Contrast checker → · Palette generator →