#643E84#643E84

#643E84 is a dark, moderate violet. Relative luminance 0.078; OKLCH L 44.0% C 0.117 H 307.3°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#643E84
RGB	rgb(100, 62, 132)
HSL	hsl(273, 36%, 38%)
HSV	hsv(273, 53%, 52%)
CMYK	cmyk(24.2%, 53%, 0%, 48.2%)
CIE-LAB	lab(33.61, 30.89, -33.15)
CIE-LCH	lch(33.61, 45.31, 312.98°)
OKLab	oklab(44.05% 0.0709 -0.0929)
OKLCH	oklch(44.05% 0.117 307.3)
XYZ	xyz(11.1422, 7.8206, 22.7479)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E84 #5E843E

analogous

#413E84 #643E84 #843E81

triadic

#643E84 #84643E #3E8464

tetradic

#643E84 #84413E #5E843E #3E8184

square

#643E84 #84413E #5E843E #3E8184

split-complementary

#643E84 #81843E #3E8441

monochromatic

#251731 #442A5A #643E84 #8452AE #A17BC1

Accessibility & contrast

On white

8.19

#643E84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#643E84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E84

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E84	#FFFFFF	#000000	##FFFFFF
##643E84	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4E86

Deuteranopia (green-blind)

#354F82

Tritanopia (blue-blind)

#5F4A5B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643e84;
/* rgb */ color: rgb(100, 62, 132);
/* oklch */ color: oklch(44.0% 0.117 307.3);

Tailwind

colors: {
  custom: {
    50: '#9274a8',
    500: '#643e84',
    950: '#000000',
  },
}

SCSS

$custom: #643e84;
$custom-light: #9274a8;
$custom-dark: #000000;

JSON

{
  "hex": "#643e84",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 132
  },
  "hsl": {
    "h": 272.571,
    "s": 36.082,
    "l": 38.039
  },
  "oklch": {
    "l": 0.4405,
    "c": 0.11687,
    "h": 307.3
  },
  "luminance": 0.07821
}

Semantic roles & 50–950 ramp

primary

#643E84

secondary

#8CAB73

accent

#CC5C8F

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643E84

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

Preview Lab → · Contrast checker → · Palette generator →