#643D7E#643D7E

#643D7E is a dark, moderate violet. Relative luminance 0.076; OKLCH L 43.5% C 0.111 H 310.2°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#643D7E
RGB	rgb(100, 61, 126)
HSL	hsl(276, 35%, 37%)
HSV	hsv(276, 52%, 49%)
CMYK	cmyk(20.6%, 51.6%, 0%, 50.6%)
CIE-LAB	lab(33.03, 29.99, -30.33)
CIE-LCH	lch(33.03, 42.65, 314.68°)
OKLab	oklab(43.52% 0.0717 -0.0847)
OKLCH	oklch(43.52% 0.111 310.2)
XYZ	xyz(10.6895, 7.5534, 20.6294)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D7E #577E3D

analogous

#443D7E #643D7E #7E3D78

triadic

#643D7E #7E643D #3D7E64

tetradic

#643D7E #7E443D #577E3D #3D787E

square

#643D7E #7E443D #577E3D #3D787E

split-complementary

#643D7E #787E3D #3D7E44

monochromatic

#23152C #432955 #643D7E #8551A7 #A278BE

Accessibility & contrast

On white

8.36

#643D7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#643D7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D7E

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D7E	#FFFFFF	#000000	##FFFFFF
##643D7E	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4C80

Deuteranopia (green-blind)

#384E7C

Tritanopia (blue-blind)

#614857

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643d7e;
/* rgb */ color: rgb(100, 61, 126);
/* oklch */ color: oklch(43.5% 0.111 310.2);

Tailwind

colors: {
  custom: {
    50: '#9274a4',
    500: '#643d7e',
    950: '#000000',
  },
}

SCSS

$custom: #643d7e;
$custom-light: #9274a4;
$custom-dark: #000000;

JSON

{
  "hex": "#643d7e",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 126
  },
  "hsl": {
    "h": 276,
    "s": 34.759,
    "l": 36.667
  },
  "oklch": {
    "l": 0.43515,
    "c": 0.11099,
    "h": 310.2
  },
  "luminance": 0.07553
}

Semantic roles & 50–950 ramp

primary

#643D7E

secondary

#86A86F

accent

#CB5D89

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643D7E

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

Preview Lab → · Contrast checker → · Palette generator →