#0A3749#0A3749

#0A3749 is a dark, muted cyan. Relative luminance 0.033; OKLCH L 31.7% C 0.056 H 229.9°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#0A3749
RGB	rgb(10, 55, 73)
HSL	hsl(197, 76%, 16%)
HSV	hsv(197, 86%, 29%)
CMYK	cmyk(86.3%, 24.7%, 0%, 71.4%)
CIE-LAB	lab(21.12, -7.57, -15.32)
CIE-LCH	lch(21.12, 17.09, 243.69°)
OKLab	oklab(31.67% -0.0363 -0.0431)
OKLCH	oklch(31.67% 0.056 229.9)
XYZ	xyz(2.6935, 3.2776, 6.7927)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A3749 #491C0A

analogous

#0A493C #0A3749 #0A1849

triadic

#0A3749 #490A37 #37490A

tetradic

#0A3749 #3C0A49 #491C0A #18490A

square

#0A3749 #3C0A49 #491C0A #18490A

split-complementary

#0A3749 #490A18 #493C0A

monochromatic

#04141B #04141B #0A3749 #11607F #1988B5

Accessibility & contrast

On white

12.68

#0A3749 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#0A3749 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A3749

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A3749	#FFFFFF	#000000	##FFFFFF
##0A3749	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E364A

Deuteranopia (green-blind)

#253049

Tritanopia (blue-blind)

#003C3D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #0a3749;
/* rgb */ color: rgb(10, 55, 73);
/* oklch */ color: oklch(31.7% 0.056 229.9);

Tailwind

colors: {
  custom: {
    50: '#556d7b',
    500: '#0a3749',
    950: '#000000',
  },
}

SCSS

$custom: #0a3749;
$custom-light: #556d7b;
$custom-dark: #000000;

JSON

{
  "hex": "#0a3749",
  "rgb": {
    "r": 10,
    "g": 55,
    "b": 73
  },
  "hsl": {
    "h": 197.143,
    "s": 75.904,
    "l": 16.275
  },
  "oklch": {
    "l": 0.31675,
    "c": 0.05635,
    "h": 229.9
  },
  "luminance": 0.03278
}

Semantic roles & 50–950 ramp

primary

#0A3749

secondary

#864329

accent

#6B35F2

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#030709

muted

#787A7B

Preview Lab

Preview with #0A3749

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

Preview Lab → · Contrast checker → · Palette generator →