#643181#643181

#643181 is a dark, vivid violet. Relative luminance 0.065; OKLCH L 41.8% C 0.135 H 311.3°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#643181
RGB	rgb(100, 49, 129)
HSL	hsl(278, 45%, 35%)
HSV	hsv(278, 62%, 51%)
CMYK	cmyk(22.5%, 62%, 0%, 49.4%)
CIE-LAB	lab(30.62, 37.55, -36.04)
CIE-LCH	lch(30.62, 52.05, 316.18°)
OKLab	oklab(41.8% 0.0891 -0.1013)
OKLCH	oklch(41.8% 0.135 311.3)
XYZ	xyz(10.3156, 6.4912, 21.4741)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643181 #4E8131

analogous

#3C3181 #643181 #813176

triadic

#643181 #816431 #318164

tetradic

#643181 #813C31 #4E8131 #317681

square

#643181 #813C31 #4E8131 #317681

split-complementary

#643181 #768131 #31813C

monochromatic

#1F0F28 #422055 #643181 #8642AD #A367C5

Accessibility & contrast

On white

9.14

#643181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#643181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643181

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643181	#FFFFFF	#000000	##FFFFFF
##643181	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144684

Deuteranopia (green-blind)

#2A497F

Tritanopia (blue-blind)

#614054

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #643181;
/* rgb */ color: rgb(100, 49, 129);
/* oklch */ color: oklch(41.8% 0.135 311.3);

Tailwind

colors: {
  custom: {
    50: '#936ca6',
    500: '#643181',
    950: '#000000',
  },
}

SCSS

$custom: #643181;
$custom-light: #936ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#643181",
  "rgb": {
    "r": 100,
    "g": 49,
    "b": 129
  },
  "hsl": {
    "h": 278.25,
    "s": 44.944,
    "l": 34.902
  },
  "oklch": {
    "l": 0.41797,
    "c": 0.13494,
    "h": 311.3
  },
  "luminance": 0.06491
}

Semantic roles & 50–950 ramp

primary

#643181

secondary

#7DAD61

accent

#D55382

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0D070F

muted

#7E7A7F

Preview Lab

Preview with #643181

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

Preview Lab → · Contrast checker → · Palette generator →