#0A0233#0A0233

#0A0233 is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 16.2% C 0.091 H 279.2°. Best body text is #FFFFFF at 19.64:1 contrast (WCAG AA passes).

Color values

HEX	#0A0233
RGB	rgb(10, 2, 51)
HSL	hsl(250, 92%, 10%)
HSV	hsv(250, 96%, 20%)
CMYK	cmyk(80.4%, 96.1%, 0%, 80%)
CIE-LAB	lab(3.13, 16.98, -28.47)
CIE-LCH	lch(3.13, 33.15, 300.81°)
OKLab	oklab(16.22% 0.0145 -0.09)
OKLCH	oklch(16.22% 0.091 279.2)
XYZ	xyz(0.7442, 0.3469, 3.1591)
Luminance	0.0035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0233 #2B3302

analogous

#021233 #0A0233 #220233

triadic

#0A0233 #330A02 #02330A

tetradic

#0A0233 #330212 #2B3302 #023322

square

#0A0233 #330212 #2B3302 #023322

split-complementary

#0A0233 #332202 #123302

monochromatic

#06011D #06011D #0A0233 #16046E #2107A9

Accessibility & contrast

On white

19.64

#0A0233 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#0A0233 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0233

19.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0233	#FFFFFF	#000000	##FFFFFF
##0A0233	1.00	19.64	1.07	19.64
#FFFFFF	19.64	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D34

Deuteranopia (green-blind)

#000932

Tritanopia (blue-blind)

#00101A

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #0a0233;
/* rgb */ color: rgb(10, 2, 51);
/* oklch */ color: oklch(16.2% 0.091 279.2);

Tailwind

colors: {
  custom: {
    50: '#4e476b',
    500: '#0a0233',
    950: '#000000',
  },
}

SCSS

$custom: #0a0233;
$custom-light: #4e476b;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0233",
  "rgb": {
    "r": 10,
    "g": 2,
    "b": 51
  },
  "hsl": {
    "h": 249.796,
    "s": 92.453,
    "l": 10.392
  },
  "oklch": {
    "l": 0.16224,
    "c": 0.09117,
    "h": 279.2
  },
  "luminance": 0.00347
}

Semantic roles & 50–950 ramp

primary

#0A0233

secondary

#68771A

accent

#FF29DC

background

#F4F3F6

surface

#E7E5EB

border

#C3C1C6

text

#020007

muted

#78777A

Preview Lab

Preview with #0A0233

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

Preview Lab → · Contrast checker → · Palette generator →