#643E80#643E80

#643E80 is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.8% C 0.112 H 309.1°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#643E80
RGB	rgb(100, 62, 128)
HSL	hsl(275, 35%, 37%)
HSV	hsv(275, 52%, 50%)
CMYK	cmyk(21.9%, 51.6%, 0%, 49.8%)
CIE-LAB	lab(33.38, 29.89, -31.03)
CIE-LCH	lch(33.38, 43.08, 313.93°)
OKLab	oklab(43.81% 0.0705 -0.0867)
OKLCH	oklch(43.81% 0.112 309.1)
XYZ	xyz(10.8737, 7.7132, 21.3339)
Luminance	0.0771 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E80 #5A803E

analogous

#433E80 #643E80 #803E7B

triadic

#643E80 #80643E #3E8064

tetradic

#643E80 #80433E #5A803E #3E7B80

square

#643E80 #80433E #5A803E #3E7B80

split-complementary

#643E80 #7B803E #3E8043

monochromatic

#24162E #442A57 #643E80 #8452A9 #A17ABF

Accessibility & contrast

On white

8.26

#643E80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#643E80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E80

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E80	#FFFFFF	#000000	##FFFFFF
##643E80	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4D82

Deuteranopia (green-blind)

#384F7E

Tritanopia (blue-blind)

#604959

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643e80;
/* rgb */ color: rgb(100, 62, 128);
/* oklch */ color: oklch(43.8% 0.112 309.1);

Tailwind

colors: {
  custom: {
    50: '#9274a5',
    500: '#643e80',
    950: '#000000',
  },
}

SCSS

$custom: #643e80;
$custom-light: #9274a5;
$custom-dark: #000000;

JSON

{
  "hex": "#643e80",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 128
  },
  "hsl": {
    "h": 274.545,
    "s": 34.737,
    "l": 37.255
  },
  "oklch": {
    "l": 0.43807,
    "c": 0.11175,
    "h": 309.1
  },
  "luminance": 0.07713
}

Semantic roles & 50–950 ramp

primary

#643E80

secondary

#89A971

accent

#CB5D8C

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643E80

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

Preview Lab → · Contrast checker → · Palette generator →