#0A0B43#0A0B43

#0A0B43 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.2% C 0.101 H 272.0°. Best body text is #FFFFFF at 18.39:1 contrast (WCAG AA passes).

Color values

HEX	#0A0B43
RGB	rgb(10, 11, 67)
HSL	hsl(239, 74%, 15%)
HSV	hsv(239, 85%, 26%)
CMYK	cmyk(85.1%, 83.6%, 0%, 73.7%)
CIE-LAB	lab(6.40, 21.69, -34.76)
CIE-LCH	lch(6.40, 40.97, 301.96°)
OKLab	oklab(20.15% 0.0035 -0.1012)
OKLCH	oklch(20.15% 0.101 272)
XYZ	xyz(1.2576, 0.7090, 5.3797)
Luminance	0.0071 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0B43 #43420A

analogous

#0A2843 #0A0B43 #250A43

triadic

#0A0B43 #430A0B #0B430A

tetradic

#0A0B43 #430A28 #43420A #0A4325

square

#0A0B43 #430A28 #43420A #0A4325

split-complementary

#0A0B43 #43250A #28430A

monochromatic

#04041B #04041B #0A0B43 #121478 #1A1CAE

Accessibility & contrast

On white

18.39

#0A0B43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#0A0B43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0B43

18.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0B43	#FFFFFF	#000000	##FFFFFF
##0A0B43	1.00	18.39	1.14	18.39
#FFFFFF	18.39	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001745

Deuteranopia (green-blind)

#001142

Tritanopia (blue-blind)

#001B26

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #0a0b43;
/* rgb */ color: rgb(10, 11, 67);
/* oklch */ color: oklch(20.2% 0.101 272.0);

Tailwind

colors: {
  custom: {
    50: '#554b78',
    500: '#0a0b43',
    950: '#000000',
  },
}

SCSS

$custom: #0a0b43;
$custom-light: #554b78;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0b43",
  "rgb": {
    "r": 10,
    "g": 11,
    "b": 67
  },
  "hsl": {
    "h": 238.947,
    "s": 74.026,
    "l": 15.098
  },
  "oklch": {
    "l": 0.20152,
    "c": 0.10128,
    "h": 272
  },
  "luminance": 0.00709
}

Semantic roles & 50–950 ramp

primary

#0A0B43

secondary

#807F29

accent

#ED37F1

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030109

muted

#78777B

Preview Lab

Preview with #0A0B43

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

Preview Lab → · Contrast checker → · Palette generator →