#0A033A#0A033A

#0A033A is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.5% C 0.099 H 276.2°. Best body text is #FFFFFF at 19.32:1 contrast (WCAG AA passes).

Color values

HEX	#0A033A
RGB	rgb(10, 3, 58)
HSL	hsl(248, 90%, 12%)
HSV	hsv(248, 95%, 23%)
CMYK	cmyk(82.8%, 94.8%, 0%, 77.3%)
CIE-LAB	lab(3.93, 20.70, -32.33)
CIE-LCH	lch(3.93, 38.39, 302.63°)
OKLab	oklab(17.46% 0.0107 -0.0984)
OKLCH	oklch(17.46% 0.099 276.2)
XYZ	xyz(0.9212, 0.4351, 4.0376)
Luminance	0.0043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A033A #333A03

analogous

#03183A #0A033A #26033A

triadic

#0A033A #3A0A03 #033A0A

tetradic

#0A033A #3A0318 #333A03 #033A26

square

#0A033A #3A0318 #333A03 #033A26

split-complementary

#0A033A #3A2603 #183A03

monochromatic

#05021D #05021D #0A033A #140674 #1E09AE

Accessibility & contrast

On white

19.32

#0A033A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#0A033A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A033A

19.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A033A	#FFFFFF	#000000	##FFFFFF
##0A033A	1.00	19.32	1.09	19.32
#FFFFFF	19.32	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00103B

Deuteranopia (green-blind)

#000B39

Tritanopia (blue-blind)

#00141F

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #0a033a;
/* rgb */ color: rgb(10, 3, 58);
/* oklch */ color: oklch(17.5% 0.099 276.2);

Tailwind

colors: {
  custom: {
    50: '#514771',
    500: '#0a033a',
    950: '#000000',
  },
}

SCSS

$custom: #0a033a;
$custom-light: #514771;
$custom-dark: #000000;

JSON

{
  "hex": "#0a033a",
  "rgb": {
    "r": 10,
    "g": 3,
    "b": 58
  },
  "hsl": {
    "h": 247.636,
    "s": 90.164,
    "l": 11.961
  },
  "oklch": {
    "l": 0.1746,
    "c": 0.09894,
    "h": 276.2
  },
  "luminance": 0.00435
}

Semantic roles & 50–950 ramp

primary

#0A033A

secondary

#707D1C

accent

#FF29E4

background

#F4F3F6

surface

#E7E5EC

border

#C3C1C7

text

#020008

muted

#78777B

Preview Lab

Preview with #0A033A

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

Preview Lab → · Contrast checker → · Palette generator →