#0A213B#0A213B

#0A213B is a very dark, muted cyan. Relative luminance 0.015; OKLCH L 24.5% C 0.058 H 253.5°. Best body text is #FFFFFF at 16.23:1 contrast (WCAG AA passes).

Color values

HEX	#0A213B
RGB	rgb(10, 33, 59)
HSL	hsl(212, 71%, 14%)
HSV	hsv(212, 83%, 23%)
CMYK	cmyk(83.1%, 44.1%, 0%, 76.9%)
CIE-LAB	lab(12.40, 1.82, -19.37)
CIE-LCH	lch(12.40, 19.45, 275.36°)
OKLab	oklab(24.51% -0.0163 -0.0552)
OKLCH	oklch(24.51% 0.058 253.5)
XYZ	xyz(1.4582, 1.4678, 4.3433)
Luminance	0.0147 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A213B #3B240A

analogous

#0A393B #0A213B #0C0A3B

triadic

#0A213B #3B0A21 #213B0A

tetradic

#0A213B #3B0A39 #3B240A #0A3B0C

square

#0A213B #3B0A39 #3B240A #0A3B0C

split-complementary

#0A213B #3B0C0A #393B0A

monochromatic

#040F1A #040F1A #0A213B #133E6F #1C5CA4

Accessibility & contrast

On white

16.23

#0A213B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#0A213B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A213B

16.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A213B	#FFFFFF	#000000	##FFFFFF
##0A213B	1.00	16.23	1.29	16.23
#FFFFFF	16.23	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15233C

Deuteranopia (green-blind)

#0E1E3A

Tritanopia (blue-blind)

#00272B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #0a213b;
/* rgb */ color: rgb(10, 33, 59);
/* oklch */ color: oklch(24.5% 0.058 253.5);

Tailwind

colors: {
  custom: {
    50: '#515b71',
    500: '#0a213b',
    950: '#000000',
  },
}

SCSS

$custom: #0a213b;
$custom-light: #515b71;
$custom-dark: #000000;

JSON

{
  "hex": "#0a213b",
  "rgb": {
    "r": 10,
    "g": 33,
    "b": 59
  },
  "hsl": {
    "h": 211.837,
    "s": 71.014,
    "l": 13.529
  },
  "oklch": {
    "l": 0.24512,
    "c": 0.05753,
    "h": 253.5
  },
  "luminance": 0.01468
}

Semantic roles & 50–950 ramp

primary

#0A213B

secondary

#785328

accent

#993AEE

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #0A213B

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

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