#643A85#643A85

#643A85 is a dark, vivid violet. Relative luminance 0.074; OKLCH L 43.4% C 0.125 H 307.9°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#643A85
RGB	rgb(100, 58, 133)
HSL	hsl(274, 39%, 37%)
HSV	hsv(274, 56%, 52%)
CMYK	cmyk(24.8%, 56.4%, 0%, 47.8%)
CIE-LAB	lab(32.76, 33.48, -35.10)
CIE-LCH	lch(32.76, 48.51, 313.64°)
OKLab	oklab(43.45% 0.0767 -0.0986)
OKLCH	oklch(43.45% 0.125 307.9)
XYZ	xyz(11.0014, 7.4290, 23.0401)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A85 #5B853A

analogous

#3F3A85 #643A85 #853A81

triadic

#643A85 #85643A #3A8564

tetradic

#643A85 #853F3A #5B853A #3A8185

square

#643A85 #853F3A #5B853A #3A8185

split-complementary

#643A85 #81853A #3A853F

monochromatic

#241530 #44275A #643A85 #844DB0 #A176C3

Accessibility & contrast

On white

8.45

#643A85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#643A85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A85

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A85	#FFFFFF	#000000	##FFFFFF
##643A85	1.00	8.45	2.49	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224B87

Deuteranopia (green-blind)

#304E83

Tritanopia (blue-blind)

#5F485A

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643a85;
/* rgb */ color: rgb(100, 58, 133);
/* oklch */ color: oklch(43.4% 0.125 307.9);

Tailwind

colors: {
  custom: {
    50: '#9272a9',
    500: '#643a85',
    950: '#000000',
  },
}

SCSS

$custom: #643a85;
$custom-light: #9272a9;
$custom-dark: #000000;

JSON

{
  "hex": "#643a85",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 133
  },
  "hsl": {
    "h": 273.6,
    "s": 39.267,
    "l": 37.451
  },
  "oklch": {
    "l": 0.43447,
    "c": 0.12497,
    "h": 307.9
  },
  "luminance": 0.07429
}

Semantic roles & 50–950 ramp

primary

#643A85

secondary

#8AAD6E

accent

#CF598D

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643A85

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

Preview Lab → · Contrast checker → · Palette generator →