#0A2139#0A2139

#0A2139 is a very dark, muted cyan. Relative luminance 0.014; OKLCH L 24.4% C 0.054 H 251.8°. Best body text is #FFFFFF at 16.28:1 contrast (WCAG AA passes).

Color values

HEX	#0A2139
RGB	rgb(10, 33, 57)
HSL	hsl(211, 70%, 13%)
HSV	hsv(211, 82%, 22%)
CMYK	cmyk(82.5%, 42.1%, 0%, 77.6%)
CIE-LAB	lab(12.27, 0.92, -18.16)
CIE-LCH	lch(12.27, 18.18, 272.91°)
OKLab	oklab(24.37% -0.0169 -0.0516)
OKLCH	oklch(24.37% 0.054 251.8)
XYZ	xyz(1.4073, 1.4475, 4.0753)
Luminance	0.0145 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A2139 #39220A

analogous

#0A3839 #0A2139 #0A0A39

triadic

#0A2139 #390A21 #21390A

tetradic

#0A2139 #390A38 #39220A #0A390A

square

#0A2139 #390A38 #39220A #0A390A

split-complementary

#0A2139 #390A0A #38390A

monochromatic

#050F1A #050F1A #0A2139 #133F6D #1C5DA1

Accessibility & contrast

On white

16.28

#0A2139 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#0A2139 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A2139

16.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A2139	#FFFFFF	#000000	##FFFFFF
##0A2139	1.00	16.28	1.29	16.28
#FFFFFF	16.28	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16223A

Deuteranopia (green-blind)

#0F1E39

Tritanopia (blue-blind)

#00272A

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #0a2139;
/* rgb */ color: rgb(10, 33, 57);
/* oklch */ color: oklch(24.4% 0.054 251.8);

Tailwind

colors: {
  custom: {
    50: '#505b6f',
    500: '#0a2139',
    950: '#000000',
  },
}

SCSS

$custom: #0a2139;
$custom-light: #505b6f;
$custom-dark: #000000;

JSON

{
  "hex": "#0a2139",
  "rgb": {
    "r": 10,
    "g": 33,
    "b": 57
  },
  "hsl": {
    "h": 210.638,
    "s": 70.149,
    "l": 13.137
  },
  "oklch": {
    "l": 0.24366,
    "c": 0.05433,
    "h": 251.8
  },
  "luminance": 0.01448
}

Semantic roles & 50–950 ramp

primary

#0A2139

secondary

#765028

accent

#963BED

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020407

muted

#78797A

Preview Lab

Preview with #0A2139

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

Preview Lab → · Contrast checker → · Palette generator →