#643E7D#643E7D

#643E7D is a dark, moderate violet. Relative luminance 0.076; OKLCH L 43.6% C 0.108 H 310.5°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#643E7D
RGB	rgb(100, 62, 125)
HSL	hsl(276, 34%, 37%)
HSV	hsv(276, 50%, 49%)
CMYK	cmyk(20%, 50.4%, 0%, 51%)
CIE-LAB	lab(33.21, 29.15, -29.42)
CIE-LCH	lch(33.21, 41.42, 314.73°)
OKLab	oklab(43.63% 0.0701 -0.0821)
OKLCH	oklch(43.63% 0.108 310.5)
XYZ	xyz(10.6791, 7.6354, 20.3093)
Luminance	0.0764 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E7D #577D3E

analogous

#453E7D #643E7D #7D3E77

triadic

#643E7D #7D643E #3E7D64

tetradic

#643E7D #7D453E #577D3E #3E777D

square

#643E7D #7D453E #577D3E #3E777D

split-complementary

#643E7D #777D3E #3E7D45

monochromatic

#23152B #432A54 #643E7D #8552A6 #A279BC

Accessibility & contrast

On white

8.31

#643E7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#643E7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E7D

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E7D	#FFFFFF	#000000	##FFFFFF
##643E7D	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4C7F

Deuteranopia (green-blind)

#394F7B

Tritanopia (blue-blind)

#614857

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643e7d;
/* rgb */ color: rgb(100, 62, 125);
/* oklch */ color: oklch(43.6% 0.108 310.5);

Tailwind

colors: {
  custom: {
    50: '#9274a3',
    500: '#643e7d',
    950: '#000000',
  },
}

SCSS

$custom: #643e7d;
$custom-light: #9274a3;
$custom-dark: #000000;

JSON

{
  "hex": "#643e7d",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 125
  },
  "hsl": {
    "h": 276.19,
    "s": 33.69,
    "l": 36.667
  },
  "oklch": {
    "l": 0.43628,
    "c": 0.10793,
    "h": 310.5
  },
  "luminance": 0.07635
}

Semantic roles & 50–950 ramp

primary

#643E7D

secondary

#86A770

accent

#CA5E89

background

#F9F7FA

surface

#F1EDF3

border

#CBC8CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643E7D

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

Preview Lab → · Contrast checker → · Palette generator →