#0A043C#0A043C

#0A043C is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.0% C 0.100 H 275.3°. Best body text is #FFFFFF at 19.17:1 contrast (WCAG AA passes).

Color values

HEX	#0A043C
RGB	rgb(10, 4, 60)
HSL	hsl(246, 88%, 13%)
HSV	hsv(246, 93%, 24%)
CMYK	cmyk(83.3%, 93.3%, 0%, 76.5%)
CIE-LAB	lab(4.31, 21.41, -33.16)
CIE-LCH	lch(4.31, 39.47, 302.85°)
OKLab	oklab(17.95% 0.0093 -0.0997)
OKLCH	oklch(17.95% 0.1 275.3)
XYZ	xyz(0.9839, 0.4775, 4.3144)
Luminance	0.0048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A043C #363C04

analogous

#041A3C #0A043C #26043C

triadic

#0A043C #3C0A04 #043C0A

tetradic

#0A043C #3C041A #363C04 #043C26

square

#0A043C #3C041A #363C04 #043C26

split-complementary

#0A043C #3C2604 #1A3C04

monochromatic

#05021D #05021D #0A043C #140875 #1D0CAF

Accessibility & contrast

On white

19.17

#0A043C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0A043C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A043C

19.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A043C	#FFFFFF	#000000	##FFFFFF
##0A043C	1.00	19.17	1.10	19.17
#FFFFFF	19.17	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00113E

Deuteranopia (green-blind)

#000C3B

Tritanopia (blue-blind)

#001520

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #0a043c;
/* rgb */ color: rgb(10, 4, 60);
/* oklch */ color: oklch(18.0% 0.100 275.3);

Tailwind

colors: {
  custom: {
    50: '#524772',
    500: '#0a043c',
    950: '#000000',
  },
}

SCSS

$custom: #0a043c;
$custom-light: #524772;
$custom-dark: #000000;

JSON

{
  "hex": "#0a043c",
  "rgb": {
    "r": 10,
    "g": 4,
    "b": 60
  },
  "hsl": {
    "h": 246.429,
    "s": 87.5,
    "l": 12.549
  },
  "oklch": {
    "l": 0.17952,
    "c": 0.10017,
    "h": 275.3
  },
  "luminance": 0.00478
}

Semantic roles & 50–950 ramp

primary

#0A043C

secondary

#737E1E

accent

#FE2AE7

background

#F5F4F7

surface

#E8E6ED

border

#C4C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0A043C

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

Preview Lab → · Contrast checker → · Palette generator →