#0B0542#0B0542

#0B0542 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.1% C 0.107 H 274.4°. Best body text is #FFFFFF at 18.84:1 contrast (WCAG AA passes).

Color values

HEX	#0B0542
RGB	rgb(11, 5, 66)
HSL	hsl(246, 86%, 14%)
HSV	hsv(246, 92%, 26%)
CMYK	cmyk(83.3%, 92.4%, 0%, 74.1%)
CIE-LAB	lab(5.17, 24.35, -36.06)
CIE-LCH	lch(5.17, 43.51, 304.03°)
OKLab	oklab(19.06% 0.0083 -0.1063)
OKLCH	oklch(19.06% 0.107 274.4)
XYZ	xyz(1.1753, 0.5729, 5.2018)
Luminance	0.0057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 1.76

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0542 #3C4205

analogous

#051E42 #0B0542 #2A0542

triadic

#0B0542 #420B05 #05420B

tetradic

#0B0542 #42051E #3C4205 #05422A

square

#0B0542 #42051E #3C4205 #05422A

split-complementary

#0B0542 #422A05 #1E4205

monochromatic

#05021C #05021C #0B0542 #14097B #1E0EB4

Accessibility & contrast

On white

18.84

#0B0542 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#0B0542 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0542

18.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0542	#FFFFFF	#000000	##FFFFFF
##0B0542	1.00	18.84	1.11	18.84
#FFFFFF	18.84	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001444

Deuteranopia (green-blind)

#000E41

Tritanopia (blue-blind)

#001824

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #0b0542;
/* rgb */ color: rgb(11, 5, 66);
/* oklch */ color: oklch(19.1% 0.107 274.4);

Tailwind

colors: {
  custom: {
    50: '#554777',
    500: '#0b0542',
    950: '#000000',
  },
}

SCSS

$custom: #0b0542;
$custom-light: #554777;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0542",
  "rgb": {
    "r": 11,
    "g": 5,
    "b": 66
  },
  "hsl": {
    "h": 245.902,
    "s": 85.915,
    "l": 13.922
  },
  "oklch": {
    "l": 0.19063,
    "c": 0.10667,
    "h": 274.4
  },
  "luminance": 0.00573
}

Semantic roles & 50–950 ramp

primary

#0B0542

secondary

#798220

accent

#FC2CE8

background

#F5F4F7

surface

#E9E6ED

border

#C5C2C8

text

#030009

muted

#78777B

Preview Lab

Preview with #0B0542

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

Preview Lab → · Contrast checker → · Palette generator →