#0D3F4B#0D3F4B

#0D3F4B is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.055 H 217.7°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#0D3F4B
RGB	rgb(13, 63, 75)
HSL	hsl(192, 70%, 17%)
HSV	hsv(192, 83%, 29%)
CMYK	cmyk(82.7%, 16%, 0%, 70.6%)
CIE-LAB	lab(24.16, -11.41, -11.97)
CIE-LCH	lch(24.16, 16.54, 226.35°)
OKLab	oklab(34.16% -0.0431 -0.0334)
OKLCH	oklch(34.16% 0.055 217.7)
XYZ	xyz(3.2130, 4.1482, 7.2866)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0D3F4B #4B190D

analogous

#0D4B38 #0D3F4B #0D204B

triadic

#0D3F4B #4B0D3F #3F4B0D

tetradic

#0D3F4B #380D4B #4B190D #204B0D

square

#0D3F4B #380D4B #4B190D #204B0D

split-complementary

#0D3F4B #4B0D20 #4B380D

monochromatic

#05161A #05161A #0D3F4B #166B7F #1F97B3

Accessibility & contrast

On white

11.48

#0D3F4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#0D3F4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0D3F4B

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0D3F4B	#FFFFFF	#000000	##FFFFFF
##0D3F4B	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)

#373D4C

Deuteranopia (green-blind)

#2F374B

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #0d3f4b;
/* rgb */ color: rgb(13, 63, 75);
/* oklch */ color: oklch(34.2% 0.055 217.7);

Tailwind

colors: {
  custom: {
    50: '#57747d',
    500: '#0d3f4b',
    950: '#000000',
  },
}

SCSS

$custom: #0d3f4b;
$custom-light: #57747d;
$custom-dark: #000000;

JSON

{
  "hex": "#0d3f4b",
  "rgb": {
    "r": 13,
    "g": 63,
    "b": 75
  },
  "hsl": {
    "h": 191.613,
    "s": 70.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.34159,
    "c": 0.05457,
    "h": 217.7
  },
  "luminance": 0.04149
}

Semantic roles & 50–950 ramp

primary

#0D3F4B

secondary

#863F2E

accent

#5D3BED

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #0D3F4B

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

Preview Lab → · Contrast checker → · Palette generator →