#0A213E#0A213E

#0A213E is a very dark, moderate cyan. Relative luminance 0.015; OKLCH L 24.7% C 0.062 H 255.7°. Best body text is #FFFFFF at 16.15:1 contrast (WCAG AA passes).

Color values

HEX	#0A213E
RGB	rgb(10, 33, 62)
HSL	hsl(213, 72%, 14%)
HSV	hsv(213, 84%, 24%)
CMYK	cmyk(83.9%, 46.8%, 0%, 75.7%)
CIE-LAB	lab(12.61, 3.16, -21.16)
CIE-LCH	lch(12.61, 21.39, 278.51°)
OKLab	oklab(24.74% -0.0154 -0.0604)
OKLCH	oklch(24.74% 0.062 255.7)
XYZ	xyz(1.5382, 1.4999, 4.7649)
Luminance	0.0150 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A213E #3E270A

analogous

#0A3B3E #0A213E #0D0A3E

triadic

#0A213E #3E0A21 #213E0A

tetradic

#0A213E #3E0A3B #3E270A #0A3E0D

square

#0A213E #3E0A3B #3E270A #0A3E0D

split-complementary

#0A213E #3E0D0A #3B3E0A

monochromatic

#040E1A #040E1A #0A213E #133D73 #1B59A7

Accessibility & contrast

On white

16.15

#0A213E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#0A213E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A213E

16.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A213E	#FFFFFF	#000000	##FFFFFF
##0A213E	1.00	16.15	1.30	16.15
#FFFFFF	16.15	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13233F

Deuteranopia (green-blind)

#0B1F3D

Tritanopia (blue-blind)

#00282C

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #0a213e;
/* rgb */ color: rgb(10, 33, 62);
/* oklch */ color: oklch(24.7% 0.062 255.7);

Tailwind

colors: {
  custom: {
    50: '#525b73',
    500: '#0a213e',
    950: '#000000',
  },
}

SCSS

$custom: #0a213e;
$custom-light: #525b73;
$custom-dark: #000000;

JSON

{
  "hex": "#0a213e",
  "rgb": {
    "r": 10,
    "g": 33,
    "b": 62
  },
  "hsl": {
    "h": 213.462,
    "s": 72.222,
    "l": 14.118
  },
  "oklch": {
    "l": 0.24738,
    "c": 0.06236,
    "h": 255.7
  },
  "luminance": 0.015
}

Semantic roles & 50–950 ramp

primary

#0A213E

secondary

#7B5728

accent

#9E39EF

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020408

muted

#78797B

Preview Lab

Preview with #0A213E

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

Preview Lab → · Contrast checker → · Palette generator →