#281B63#281B63

#281B63 is a dark, vivid violet. Relative luminance 0.021; OKLCH L 28.9% C 0.120 H 284.3°. Best body text is #FFFFFF at 14.71:1 contrast (WCAG AA passes).

Color values

HEX	#281B63
RGB	rgb(40, 27, 99)
HSL	hsl(251, 57%, 25%)
HSV	hsv(251, 73%, 39%)
CMYK	cmyk(59.6%, 72.7%, 0%, 61.2%)
CIE-LAB	lab(16.18, 27.92, -40.48)
CIE-LCH	lch(16.18, 49.17, 304.59°)
OKLab	oklab(28.95% 0.0296 -0.1164)
OKLCH	oklch(28.95% 0.12 284.3)
XYZ	xyz(3.5184, 2.1356, 12.0288)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B63 #56631B

analogous

#1B3263 #281B63 #4C1B63

triadic

#281B63 #63281B #1B6328

tetradic

#281B63 #631B32 #56631B #1B634C

square

#281B63 #631B32 #56631B #1B634C

split-complementary

#281B63 #634C1B #32631B

monochromatic

#0A0718 #150E33 #281B63 #3B2893 #4F35C3

Accessibility & contrast

On white

14.71

#281B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#281B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B63

14.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B63	#FFFFFF	#000000	##FFFFFF
##281B63	1.00	14.71	1.43	14.71
#FFFFFF	14.71	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A65

Deuteranopia (green-blind)

#002662

Tritanopia (blue-blind)

#0B2E3C

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #281b63;
/* rgb */ color: rgb(40, 27, 99);
/* oklch */ color: oklch(28.9% 0.120 284.3);

Tailwind

colors: {
  custom: {
    50: '#695890',
    500: '#281b63',
    950: '#000000',
  },
}

SCSS

$custom: #281b63;
$custom-light: #695890;
$custom-dark: #000000;

JSON

{
  "hex": "#281b63",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 99
  },
  "hsl": {
    "h": 250.833,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.28948,
    "c": 0.12014,
    "h": 284.3
  },
  "luminance": 0.02136
}

Semantic roles & 50–950 ramp

primary

#281B63

secondary

#899841

accent

#E047C5

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#07030D

muted

#7A787D

Preview Lab

Preview with #281B63

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

Preview Lab → · Contrast checker → · Palette generator →