#0A213A#0A213A

#0A213A is a very dark, muted cyan. Relative luminance 0.015; OKLCH L 24.4% C 0.056 H 252.7°. Best body text is #FFFFFF at 16.26:1 contrast (WCAG AA passes).

Color values

HEX	#0A213A
RGB	rgb(10, 33, 58)
HSL	hsl(211, 71%, 13%)
HSV	hsv(211, 83%, 23%)
CMYK	cmyk(82.8%, 43.1%, 0%, 77.3%)
CIE-LAB	lab(12.34, 1.37, -18.76)
CIE-LCH	lch(12.34, 18.81, 274.17°)
OKLab	oklab(24.44% -0.0166 -0.0534)
OKLCH	oklch(24.44% 0.056 252.7)
XYZ	xyz(1.4325, 1.4576, 4.2080)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A213A #3A230A

analogous

#0A393A #0A213A #0B0A3A

triadic

#0A213A #3A0A21 #213A0A

tetradic

#0A213A #3A0A39 #3A230A #0A3A0B

square

#0A213A #3A0A39 #3A230A #0A3A0B

split-complementary

#0A213A #3A0B0A #393A0A

monochromatic

#050F1A #050F1A #0A213A #133F6E #1C5CA2

Accessibility & contrast

On white

16.26

#0A213A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#0A213A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A213A

16.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A213A	#FFFFFF	#000000	##FFFFFF
##0A213A	1.00	16.26	1.29	16.26
#FFFFFF	16.26	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16233B

Deuteranopia (green-blind)

#0E1E3A

Tritanopia (blue-blind)

#00272A

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #0a213a;
/* rgb */ color: rgb(10, 33, 58);
/* oklch */ color: oklch(24.4% 0.056 252.7);

Tailwind

colors: {
  custom: {
    50: '#505b70',
    500: '#0a213a',
    950: '#000000',
  },
}

SCSS

$custom: #0a213a;
$custom-light: #505b70;
$custom-dark: #000000;

JSON

{
  "hex": "#0a213a",
  "rgb": {
    "r": 10,
    "g": 33,
    "b": 58
  },
  "hsl": {
    "h": 211.25,
    "s": 70.588,
    "l": 13.333
  },
  "oklch": {
    "l": 0.24438,
    "c": 0.05592,
    "h": 252.7
  },
  "luminance": 0.01458
}

Semantic roles & 50–950 ramp

primary

#0A213A

secondary

#775228

accent

#983AED

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #0A213A

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

Preview Lab → · Contrast checker → · Palette generator →