#0A3747#0A3747

#0A3747 is a dark, muted cyan. Relative luminance 0.033; OKLCH L 31.6% C 0.054 H 226.8°. Best body text is #FFFFFF at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#0A3747
RGB	rgb(10, 55, 71)
HSL	hsl(196, 75%, 16%)
HSV	hsv(196, 86%, 28%)
CMYK	cmyk(85.9%, 22.5%, 0%, 72.2%)
CIE-LAB	lab(21.02, -8.39, -14.13)
CIE-LCH	lch(21.02, 16.43, 239.29°)
OKLab	oklab(31.56% -0.0372 -0.0396)
OKLCH	oklch(31.56% 0.054 226.8)
XYZ	xyz(2.6282, 3.2515, 6.4491)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A3747 #471A0A

analogous

#0A4738 #0A3747 #0A1847

triadic

#0A3747 #470A37 #37470A

tetradic

#0A3747 #380A47 #471A0A #18470A

square

#0A3747 #380A47 #471A0A #18470A

split-complementary

#0A3747 #470A18 #47380A

monochromatic

#04151B #04151B #0A3747 #12617D #198AB2

Accessibility & contrast

On white

12.72

#0A3747 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#0A3747 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A3747

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A3747	#FFFFFF	#000000	##FFFFFF
##0A3747	1.00	12.72	1.65	12.72
#FFFFFF	12.72	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3648

Deuteranopia (green-blind)

#263047

Tritanopia (blue-blind)

#003C3C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #0a3747;
/* rgb */ color: rgb(10, 55, 71);
/* oklch */ color: oklch(31.6% 0.054 226.8);

Tailwind

colors: {
  custom: {
    50: '#556d7a',
    500: '#0a3747',
    950: '#000000',
  },
}

SCSS

$custom: #0a3747;
$custom-light: #556d7a;
$custom-dark: #000000;

JSON

{
  "hex": "#0a3747",
  "rgb": {
    "r": 10,
    "g": 55,
    "b": 71
  },
  "hsl": {
    "h": 195.738,
    "s": 75.309,
    "l": 15.882
  },
  "oklch": {
    "l": 0.31564,
    "c": 0.05437,
    "h": 226.8
  },
  "luminance": 0.03252
}

Semantic roles & 50–950 ramp

primary

#0A3747

secondary

#844129

accent

#6736F2

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#030709

muted

#787A7B

Preview Lab

Preview with #0A3747

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

Preview Lab → · Contrast checker → · Palette generator →