#643D82#643D82

#643D82 is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.8% C 0.116 H 308.4°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#643D82
RGB	rgb(100, 61, 130)
HSL	hsl(274, 36%, 37%)
HSV	hsv(274, 53%, 51%)
CMYK	cmyk(23.1%, 53.1%, 0%, 49%)
CIE-LAB	lab(33.26, 30.98, -32.45)
CIE-LCH	lch(33.26, 44.87, 313.67°)
OKLab	oklab(43.76% 0.0722 -0.0909)
OKLCH	oklch(43.76% 0.116 308.4)
XYZ	xyz(10.9528, 7.6587, 22.0160)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D82 #5B823D

analogous

#413D82 #643D82 #823D7E

triadic

#643D82 #82643D #3D8264

tetradic

#643D82 #82413D #5B823D #3D7E82

square

#643D82 #82413D #5B823D #3D7E82

split-complementary

#643D82 #7E823D #3D8241

monochromatic

#24162F #442958 #643D82 #8451AC #A179C0

Accessibility & contrast

On white

8.29

#643D82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#643D82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D82

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D82	#FFFFFF	#000000	##FFFFFF
##643D82	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4D84

Deuteranopia (green-blind)

#354F80

Tritanopia (blue-blind)

#604959

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643d82;
/* rgb */ color: rgb(100, 61, 130);
/* oklch */ color: oklch(43.8% 0.116 308.4);

Tailwind

colors: {
  custom: {
    50: '#9274a7',
    500: '#643d82',
    950: '#000000',
  },
}

SCSS

$custom: #643d82;
$custom-light: #9274a7;
$custom-dark: #000000;

JSON

{
  "hex": "#643d82",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 130
  },
  "hsl": {
    "h": 273.913,
    "s": 36.126,
    "l": 37.451
  },
  "oklch": {
    "l": 0.43757,
    "c": 0.11605,
    "h": 308.4
  },
  "luminance": 0.07659
}

Semantic roles & 50–950 ramp

primary

#643D82

secondary

#8AAA71

accent

#CC5C8D

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643D82

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

Preview Lab → · Contrast checker → · Palette generator →