#0B3F4C#0B3F4C

#0B3F4C is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.056 H 219.0°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#0B3F4C
RGB	rgb(11, 63, 76)
HSL	hsl(192, 75%, 17%)
HSV	hsv(192, 86%, 30%)
CMYK	cmyk(85.5%, 17.1%, 0%, 70.2%)
CIE-LAB	lab(24.15, -11.30, -12.63)
CIE-LCH	lch(24.15, 16.95, 228.20°)
OKLab	oklab(34.16% -0.0436 -0.0353)
OKLCH	oklch(34.16% 0.056 219)
XYZ	xyz(3.2195, 4.1476, 7.4670)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3F4C #4C180B

analogous

#0B4C39 #0B3F4C #0B1F4C

triadic

#0B3F4C #4C0B3F #3F4C0B

tetradic

#0B3F4C #390B4C #4C180B #1F4C0B

square

#0B3F4C #390B4C #4C180B #1F4C0B

split-complementary

#0B3F4C #4C0B1F #4C390B

monochromatic

#04161B #04161B #0B3F4C #136B81 #1A98B7

Accessibility & contrast

On white

11.48

#0B3F4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#0B3F4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3F4C

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3F4C	#FFFFFF	#000000	##FFFFFF
##0B3F4C	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373D4D

Deuteranopia (green-blind)

#2E374C

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #0b3f4c;
/* rgb */ color: rgb(11, 63, 76);
/* oklch */ color: oklch(34.2% 0.056 219.0);

Tailwind

colors: {
  custom: {
    50: '#57747e',
    500: '#0b3f4c',
    950: '#000000',
  },
}

SCSS

$custom: #0b3f4c;
$custom-light: #57747e;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3f4c",
  "rgb": {
    "r": 11,
    "g": 63,
    "b": 76
  },
  "hsl": {
    "h": 192,
    "s": 74.713,
    "l": 17.059
  },
  "oklch": {
    "l": 0.34159,
    "c": 0.05613,
    "h": 219
  },
  "luminance": 0.04148
}

Semantic roles & 50–950 ramp

primary

#0B3F4C

secondary

#883D2B

accent

#5C36F1

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #0B3F4C

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

Preview Lab → · Contrast checker → · Palette generator →