#0B0B43#0B0B43

#0B0B43 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.2% C 0.101 H 272.7°. Best body text is #FFFFFF at 18.37:1 contrast (WCAG AA passes).

Color values

HEX	#0B0B43
RGB	rgb(11, 11, 67)
HSL	hsl(240, 72%, 15%)
HSV	hsv(240, 84%, 26%)
CMYK	cmyk(83.6%, 83.6%, 0%, 73.7%)
CIE-LAB	lab(6.46, 21.84, -34.66)
CIE-LCH	lch(6.46, 40.97, 302.21°)
OKLab	oklab(20.22% 0.0048 -0.1008)
OKLCH	oklch(20.22% 0.101 272.7)
XYZ	xyz(1.2705, 0.7156, 5.3803)
Luminance	0.0072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0B43 #43430B

analogous

#0B2743 #0B0B43 #270B43

triadic

#0B0B43 #430B0B #0B430B

tetradic

#0B0B43 #430B27 #43430B #0B4327

square

#0B0B43 #430B27 #43430B #0B4327

split-complementary

#0B0B43 #43270B #27430B

monochromatic

#04041A #04041A #0B0B43 #141478 #1C1CAC

Accessibility & contrast

On white

18.37

#0B0B43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#0B0B43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0B43

18.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0B43	#FFFFFF	#000000	##FFFFFF
##0B0B43	1.00	18.37	1.14	18.37
#FFFFFF	18.37	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001745

Deuteranopia (green-blind)

#001242

Tritanopia (blue-blind)

#001B26

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #0b0b43;
/* rgb */ color: rgb(11, 11, 67);
/* oklch */ color: oklch(20.2% 0.101 272.7);

Tailwind

colors: {
  custom: {
    50: '#554b78',
    500: '#0b0b43',
    950: '#000000',
  },
}

SCSS

$custom: #0b0b43;
$custom-light: #554b78;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0b43",
  "rgb": {
    "r": 11,
    "g": 11,
    "b": 67
  },
  "hsl": {
    "h": 240,
    "s": 71.795,
    "l": 15.294
  },
  "oklch": {
    "l": 0.20219,
    "c": 0.10096,
    "h": 272.7
  },
  "luminance": 0.00716
}

Semantic roles & 50–950 ramp

primary

#0B0B43

secondary

#80802A

accent

#EF39EF

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030109

muted

#78777B

Preview Lab

Preview with #0B0B43

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

Preview Lab → · Contrast checker → · Palette generator →