#643A93#643A93

#643A93 is a dark, vivid violet. Relative luminance 0.078; OKLCH L 44.4% C 0.142 H 302.8°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#643A93
RGB	rgb(100, 58, 147)
HSL	hsl(268, 43%, 40%)
HSV	hsv(268, 61%, 58%)
CMYK	cmyk(32%, 60.5%, 0%, 42.4%)
CIE-LAB	lab(33.65, 37.05, -42.30)
CIE-LCH	lch(33.65, 56.23, 311.22°)
OKLab	oklab(44.38% 0.077 -0.1197)
OKLCH	oklch(44.38% 0.142 302.8)
XYZ	xyz(12.0338, 7.8420, 28.4778)
Luminance	0.0784 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A93 #69933A

analogous

#3A3C93 #643A93 #913A93

triadic

#643A93 #93643A #3A9364

tetradic

#643A93 #933A3C #69933A #3A9391

square

#643A93 #933A3C #69933A #3A9391

split-complementary

#643A93 #93913A #3C933A

monochromatic

#28173B #462967 #643A93 #8250BA #A17CCB

Accessibility & contrast

On white

8.18

#643A93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#643A93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A93

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A93	#FFFFFF	#000000	##FFFFFF
##643A93	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D4E96

Deuteranopia (green-blind)

#234F91

Tritanopia (blue-blind)

#5B4C61

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643a93;
/* rgb */ color: rgb(100, 58, 147);
/* oklch */ color: oklch(44.4% 0.142 302.8);

Tailwind

colors: {
  custom: {
    50: '#9372b3',
    500: '#643a93',
    950: '#000000',
  },
}

SCSS

$custom: #643a93;
$custom-light: #9372b3;
$custom-dark: #000000;

JSON

{
  "hex": "#643a93",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 147
  },
  "hsl": {
    "h": 268.315,
    "s": 43.415,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44383,
    "c": 0.14234,
    "h": 302.8
  },
  "luminance": 0.07842
}

Semantic roles & 50–950 ramp

primary

#643A93

secondary

#96B574

accent

#D35597

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643A93

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

Preview Lab → · Contrast checker → · Palette generator →