#643C80#643C80

#643C80 is a dark, moderate violet. Relative luminance 0.075; OKLCH L 43.5% C 0.115 H 309.6°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#643C80
RGB	rgb(100, 60, 128)
HSL	hsl(275, 36%, 37%)
HSV	hsv(275, 53%, 50%)
CMYK	cmyk(21.9%, 53.1%, 0%, 49.8%)
CIE-LAB	lab(32.92, 31.07, -31.76)
CIE-LCH	lch(32.92, 44.43, 314.38°)
OKLab	oklab(43.47% 0.0734 -0.0889)
OKLCH	oklch(43.47% 0.115 309.6)
XYZ	xyz(10.7669, 7.4997, 21.2983)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C80 #58803C

analogous

#423C80 #643C80 #803C7A

triadic

#643C80 #80643C #3C8064

tetradic

#643C80 #80423C #58803C #3C7A80

square

#643C80 #80423C #58803C #3C7A80

split-complementary

#643C80 #7A803C #3C8042

monochromatic

#23152D #432856 #643C80 #8550AA #A277BF

Accessibility & contrast

On white

8.40

#643C80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#643C80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C80

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C80	#FFFFFF	#000000	##FFFFFF
##643C80	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4C82

Deuteranopia (green-blind)

#364E7E

Tritanopia (blue-blind)

#604858

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643c80;
/* rgb */ color: rgb(100, 60, 128);
/* oklch */ color: oklch(43.5% 0.115 309.6);

Tailwind

colors: {
  custom: {
    50: '#9273a5',
    500: '#643c80',
    950: '#000000',
  },
}

SCSS

$custom: #643c80;
$custom-light: #9273a5;
$custom-dark: #000000;

JSON

{
  "hex": "#643c80",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 128
  },
  "hsl": {
    "h": 275.294,
    "s": 36.17,
    "l": 36.863
  },
  "oklch": {
    "l": 0.43465,
    "c": 0.11527,
    "h": 309.6
  },
  "luminance": 0.075
}

Semantic roles & 50–950 ramp

primary

#643C80

secondary

#87A96F

accent

#CC5C8A

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643C80

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

Preview Lab → · Contrast checker → · Palette generator →