#0A023A#0A023A

#0A023A is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.2% C 0.101 H 276.5°. Best body text is #FFFFFF at 19.40:1 contrast (WCAG AA passes).

Color values

HEX	#0A023A
RGB	rgb(10, 2, 58)
HSL	hsl(249, 93%, 12%)
HSV	hsv(249, 97%, 23%)
CMYK	cmyk(82.8%, 96.6%, 0%, 77.3%)
CIE-LAB	lab(3.73, 21.13, -32.65)
CIE-LCH	lch(3.73, 38.89, 302.91°)
OKLab	oklab(17.24% 0.0115 -0.0998)
OKLCH	oklch(17.24% 0.101 276.5)
XYZ	xyz(0.9104, 0.4133, 4.0340)
Luminance	0.0041 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A023A #323A02

analogous

#02163A #0A023A #26023A

triadic

#0A023A #3A0A02 #023A0A

tetradic

#0A023A #3A0216 #323A02 #023A26

square

#0A023A #3A0216 #323A02 #023A26

split-complementary

#0A023A #3A2602 #163A02

monochromatic

#05011E #05011E #0A023A #140475 #1E06B0

Accessibility & contrast

On white

19.40

#0A023A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#0A023A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A023A

19.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A023A	#FFFFFF	#000000	##FFFFFF
##0A023A	1.00	19.40	1.08	19.40
#FFFFFF	19.40	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00103C

Deuteranopia (green-blind)

#000B39

Tritanopia (blue-blind)

#00131E

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #0a023a;
/* rgb */ color: rgb(10, 2, 58);
/* oklch */ color: oklch(17.2% 0.101 276.5);

Tailwind

colors: {
  custom: {
    50: '#514671',
    500: '#0a023a',
    950: '#000000',
  },
}

SCSS

$custom: #0a023a;
$custom-light: #514671;
$custom-dark: #000000;

JSON

{
  "hex": "#0a023a",
  "rgb": {
    "r": 10,
    "g": 2,
    "b": 58
  },
  "hsl": {
    "h": 248.571,
    "s": 93.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.17242,
    "c": 0.1005,
    "h": 276.5
  },
  "luminance": 0.00413
}

Semantic roles & 50–950 ramp

primary

#0A023A

secondary

#6F7D1A

accent

#FF29E0

background

#F4F3F6

surface

#E7E5EC

border

#C3C1C7

text

#020008

muted

#78777B

Preview Lab

Preview with #0A023A

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

Preview Lab → · Contrast checker → · Palette generator →