#0A0541#0A0541

#0A0541 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.8% C 0.106 H 273.8°. Best body text is #FFFFFF at 18.90:1 contrast (WCAG AA passes).

Color values

HEX	#0A0541
RGB	rgb(10, 5, 65)
HSL	hsl(245, 86%, 14%)
HSV	hsv(245, 92%, 25%)
CMYK	cmyk(84.6%, 92.3%, 0%, 74.5%)
CIE-LAB	lab(5.01, 23.67, -35.62)
CIE-LCH	lch(5.01, 42.77, 303.60°)
OKLab	oklab(18.85% 0.007 -0.1054)
OKLCH	oklch(18.85% 0.106 273.8)
XYZ	xyz(1.1333, 0.5546, 5.0473)
Luminance	0.0056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 1.95

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0541 #3C4105

analogous

#051E41 #0A0541 #280541

triadic

#0A0541 #410A05 #05410A

tetradic

#0A0541 #41051E #3C4105 #054128

square

#0A0541 #41051E #3C4105 #054128

split-complementary

#0A0541 #412805 #1E4105

monochromatic

#04021C #04021C #0A0541 #13097A #1B0EB3

Accessibility & contrast

On white

18.90

#0A0541 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#0A0541 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0541

18.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0541	#FFFFFF	#000000	##FFFFFF
##0A0541	1.00	18.90	1.11	18.90
#FFFFFF	18.90	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001443

Deuteranopia (green-blind)

#000E40

Tritanopia (blue-blind)

#001823

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #0a0541;
/* rgb */ color: rgb(10, 5, 65);
/* oklch */ color: oklch(18.8% 0.106 273.8);

Tailwind

colors: {
  custom: {
    50: '#544776',
    500: '#0a0541',
    950: '#000000',
  },
}

SCSS

$custom: #0a0541;
$custom-light: #544776;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0541",
  "rgb": {
    "r": 10,
    "g": 5,
    "b": 65
  },
  "hsl": {
    "h": 245,
    "s": 85.714,
    "l": 13.725
  },
  "oklch": {
    "l": 0.18847,
    "c": 0.10562,
    "h": 273.8
  },
  "luminance": 0.00555
}

Semantic roles & 50–950 ramp

primary

#0A0541

secondary

#798120

accent

#FC2CEB

background

#F5F4F7

surface

#E9E6ED

border

#C5C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0A0541

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

Preview Lab → · Contrast checker → · Palette generator →