#643A7B#643A7B

#643A7B is a dark, moderate violet. Relative luminance 0.072; OKLCH L 42.8% C 0.113 H 312.4°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#643A7B
RGB	rgb(100, 58, 123)
HSL	hsl(279, 36%, 35%)
HSV	hsv(279, 53%, 48%)
CMYK	cmyk(18.7%, 52.8%, 0%, 51.8%)
CIE-LAB	lab(32.18, 31.03, -29.80)
CIE-LCH	lch(32.18, 43.03, 316.16°)
OKLab	oklab(42.83% 0.0759 -0.0832)
OKLCH	oklch(42.83% 0.113 312.4)
XYZ	xyz(10.3431, 7.1657, 19.5733)
Luminance	0.0717 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A7B #517B3A

analogous

#433A7B #643A7B #7B3A71

triadic

#643A7B #7B643A #3A7B64

tetradic

#643A7B #7B433A #517B3A #3A717B

square

#643A7B #7B433A #517B3A #3A717B

split-complementary

#643A7B #717B3A #3A7B43

monochromatic

#201328 #422651 #643A7B #864EA5 #A373BD

Accessibility & contrast

On white

8.63

#643A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#643A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A7B

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A7B	#FFFFFF	#000000	##FFFFFF
##643A7B	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A497D

Deuteranopia (green-blind)

#374D79

Tritanopia (blue-blind)

#624455

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643a7b;
/* rgb */ color: rgb(100, 58, 123);
/* oklch */ color: oklch(42.8% 0.113 312.4);

Tailwind

colors: {
  custom: {
    50: '#9272a1',
    500: '#643a7b',
    950: '#000000',
  },
}

SCSS

$custom: #643a7b;
$custom-light: #9272a1;
$custom-dark: #000000;

JSON

{
  "hex": "#643a7b",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 123
  },
  "hsl": {
    "h": 278.769,
    "s": 35.912,
    "l": 35.49
  },
  "oklch": {
    "l": 0.42827,
    "c": 0.11258,
    "h": 312.4
  },
  "luminance": 0.07165
}

Semantic roles & 50–950 ramp

primary

#643A7B

secondary

#80A66B

accent

#CC5C84

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080F

muted

#7E7B7E

Preview Lab

Preview with #643A7B

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

Preview Lab → · Contrast checker → · Palette generator →