#643C93#643C93

#643C93 is a dark, vivid violet. Relative luminance 0.080; OKLCH L 44.7% C 0.139 H 302.3°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#643C93
RGB	rgb(100, 60, 147)
HSL	hsl(268, 42%, 41%)
HSV	hsv(268, 59%, 58%)
CMYK	cmyk(32%, 59.2%, 0%, 42.4%)
CIE-LAB	lab(34.08, 35.91, -41.61)
CIE-LCH	lch(34.08, 54.96, 310.80°)
OKLab	oklab(44.7% 0.0744 -0.1177)
OKLCH	oklch(44.7% 0.139 302.3)
XYZ	xyz(12.1366, 8.0476, 28.5121)
Luminance	0.0805 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C93 #6B933C

analogous

#3C3F93 #643C93 #8F3C93

triadic

#643C93 #93643C #3C9364

tetradic

#643C93 #933C3F #6B933C #3C938F

square

#643C93 #933C3F #6B933C #3C938F

split-complementary

#643C93 #938F3C #3F933C

monochromatic

#29193C #462A68 #643C93 #8253B9 #A27FCB

Accessibility & contrast

On white

8.05

#643C93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#643C93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C93

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C93	#FFFFFF	#000000	##FFFFFF
##643C93	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144F96

Deuteranopia (green-blind)

#265091

Tritanopia (blue-blind)

#5B4D61

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643c93;
/* rgb */ color: rgb(100, 60, 147);
/* oklch */ color: oklch(44.7% 0.139 302.3);

Tailwind

colors: {
  custom: {
    50: '#9373b3',
    500: '#643c93',
    950: '#000000',
  },
}

SCSS

$custom: #643c93;
$custom-light: #9373b3;
$custom-dark: #000000;

JSON

{
  "hex": "#643c93",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 147
  },
  "hsl": {
    "h": 267.586,
    "s": 42.029,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44698,
    "c": 0.13923,
    "h": 302.3
  },
  "luminance": 0.08048
}

Semantic roles & 50–950 ramp

primary

#643C93

secondary

#98B476

accent

#D25699

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643C93

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

Preview Lab → · Contrast checker → · Palette generator →