#643D79#643D79

#643D79 is a dark, moderate violet. Relative luminance 0.074; OKLCH L 43.2% C 0.105 H 312.7°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#643D79
RGB	rgb(100, 61, 121)
HSL	hsl(279, 33%, 36%)
HSV	hsv(279, 50%, 47%)
CMYK	cmyk(17.4%, 49.6%, 0%, 52.5%)
CIE-LAB	lab(32.76, 28.78, -27.64)
CIE-LCH	lch(32.76, 39.90, 316.16°)
OKLab	oklab(43.22% 0.071 -0.0769)
OKLCH	oklch(43.22% 0.105 312.7)
XYZ	xyz(10.3749, 7.4275, 18.9726)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D79 #52793D

analogous

#463D79 #643D79 #793D70

triadic

#643D79 #79643D #3D7964

tetradic

#643D79 #79463D #52793D #3D7079

square

#643D79 #79463D #52793D #3D7079

split-complementary

#643D79 #70793D #3D7946

monochromatic

#211428 #422850 #643D79 #8652A2 #A276BA

Accessibility & contrast

On white

8.45

#643D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#643D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D79

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D79	#FFFFFF	#000000	##FFFFFF
##643D79	1.00	8.45	2.49	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304B7B

Deuteranopia (green-blind)

#3B4E77

Tritanopia (blue-blind)

#624655

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643d79;
/* rgb */ color: rgb(100, 61, 121);
/* oklch */ color: oklch(43.2% 0.105 312.7);

Tailwind

colors: {
  custom: {
    50: '#9174a0',
    500: '#643d79',
    950: '#000000',
  },
}

SCSS

$custom: #643d79;
$custom-light: #9174a0;
$custom-dark: #000000;

JSON

{
  "hex": "#643d79",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 121
  },
  "hsl": {
    "h": 279,
    "s": 32.967,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43222,
    "c": 0.10468,
    "h": 312.7
  },
  "luminance": 0.07427
}

Semantic roles & 50–950 ramp

primary

#643D79

secondary

#81A46E

accent

#C95F84

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643D79

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

Preview Lab → · Contrast checker → · Palette generator →