#0A0239#0A0239

#0A0239 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.1% C 0.099 H 276.9°. Best body text is #FFFFFF at 19.43:1 contrast (WCAG AA passes).

Color values

HEX	#0A0239
RGB	rgb(10, 2, 57)
HSL	hsl(249, 93%, 12%)
HSV	hsv(249, 96%, 22%)
CMYK	cmyk(82.5%, 96.5%, 0%, 77.6%)
CIE-LAB	lab(3.64, 20.53, -32.07)
CIE-LCH	lch(3.64, 38.08, 302.63°)
OKLab	oklab(17.1% 0.0119 -0.0985)
OKLCH	oklch(17.1% 0.099 276.9)
XYZ	xyz(0.8852, 0.4033, 3.9013)
Luminance	0.0040 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0239 #313902

analogous

#021639 #0A0239 #260239

triadic

#0A0239 #390A02 #02390A

tetradic

#0A0239 #390216 #313902 #023926

square

#0A0239 #390216 #313902 #023926

split-complementary

#0A0239 #392602 #163902

monochromatic

#05011E #05011E #0A0239 #140474 #1F06AF

Accessibility & contrast

On white

19.43

#0A0239 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#0A0239 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0239

19.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0239	#FFFFFF	#000000	##FFFFFF
##0A0239	1.00	19.43	1.08	19.43
#FFFFFF	19.43	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000F3A

Deuteranopia (green-blind)

#000B38

Tritanopia (blue-blind)

#00131E

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #0a0239;
/* rgb */ color: rgb(10, 2, 57);
/* oklch */ color: oklch(17.1% 0.099 276.9);

Tailwind

colors: {
  custom: {
    50: '#514670',
    500: '#0a0239',
    950: '#000000',
  },
}

SCSS

$custom: #0a0239;
$custom-light: #514670;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0239",
  "rgb": {
    "r": 10,
    "g": 2,
    "b": 57
  },
  "hsl": {
    "h": 248.727,
    "s": 93.22,
    "l": 11.569
  },
  "oklch": {
    "l": 0.17095,
    "c": 0.09918,
    "h": 276.9
  },
  "luminance": 0.00403
}

Semantic roles & 50–950 ramp

primary

#0A0239

secondary

#6E7D1A

accent

#FF29E0

background

#F4F3F6

surface

#E7E5EC

border

#C3C1C7

text

#020007

muted

#78777A

Preview Lab

Preview with #0A0239

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

Preview Lab → · Contrast checker → · Palette generator →