#643B93#643B93

#643B93 is a dark, vivid violet. Relative luminance 0.079; OKLCH L 44.5% C 0.141 H 302.5°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#643B93
RGB	rgb(100, 59, 147)
HSL	hsl(268, 43%, 40%)
HSV	hsv(268, 60%, 58%)
CMYK	cmyk(32%, 59.9%, 0%, 42.4%)
CIE-LAB	lab(33.87, 36.48, -41.95)
CIE-LCH	lch(33.87, 55.60, 311.01°)
OKLab	oklab(44.54% 0.0757 -0.1187)
OKLCH	oklch(44.54% 0.141 302.5)
XYZ	xyz(12.0847, 7.9438, 28.4948)
Luminance	0.0794 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B93 #6A933B

analogous

#3B3E93 #643B93 #903B93

triadic

#643B93 #93643B #3B9364

tetradic

#643B93 #933B3E #6A933B #3B9390

square

#643B93 #933B3E #6A933B #3B9390

split-complementary

#643B93 #93903B #3E933B

monochromatic

#29183C #462967 #643B93 #8252B9 #A27DCB

Accessibility & contrast

On white

8.11

#643B93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#643B93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B93

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B93	#FFFFFF	#000000	##FFFFFF
##643B93	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114F96

Deuteranopia (green-blind)

#244F91

Tritanopia (blue-blind)

#5B4D61

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643b93;
/* rgb */ color: rgb(100, 59, 147);
/* oklch */ color: oklch(44.5% 0.141 302.5);

Tailwind

colors: {
  custom: {
    50: '#9373b3',
    500: '#643b93',
    950: '#000000',
  },
}

SCSS

$custom: #643b93;
$custom-light: #9373b3;
$custom-dark: #000000;

JSON

{
  "hex": "#643b93",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 147
  },
  "hsl": {
    "h": 267.955,
    "s": 42.718,
    "l": 40.392
  },
  "oklch": {
    "l": 0.4454,
    "c": 0.14079,
    "h": 302.5
  },
  "luminance": 0.07944
}

Semantic roles & 50–950 ramp

primary

#643B93

secondary

#97B575

accent

#D25598

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643B93

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

Preview Lab → · Contrast checker → · Palette generator →