#643E7C#643E7C

#643E7C is a dark, moderate violet. Relative luminance 0.076; OKLCH L 43.6% C 0.107 H 311.0°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#643E7C
RGB	rgb(100, 62, 124)
HSL	hsl(277, 33%, 36%)
HSV	hsv(277, 50%, 49%)
CMYK	cmyk(19.4%, 50%, 0%, 51.4%)
CIE-LAB	lab(33.16, 28.91, -28.89)
CIE-LCH	lch(33.16, 40.87, 315.02°)
OKLab	oklab(43.57% 0.0699 -0.0805)
OKLCH	oklch(43.57% 0.107 311)
XYZ	xyz(10.6156, 7.6100, 19.9745)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E7C #567C3E

analogous

#453E7C #643E7C #7C3E75

triadic

#643E7C #7C643E #3E7C64

tetradic

#643E7C #7C453E #567C3E #3E757C

square

#643E7C #7C453E #567C3E #3E757C

split-complementary

#643E7C #757C3E #3E7C45

monochromatic

#22152A #432A53 #643E7C #8552A5 #A279BC

Accessibility & contrast

On white

8.33

#643E7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#643E7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E7C

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E7C	#FFFFFF	#000000	##FFFFFF
##643E7C	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4C7E

Deuteranopia (green-blind)

#3A4F7A

Tritanopia (blue-blind)

#614857

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643e7c;
/* rgb */ color: rgb(100, 62, 124);
/* oklch */ color: oklch(43.6% 0.107 311.0);

Tailwind

colors: {
  custom: {
    50: '#9274a2',
    500: '#643e7c',
    950: '#000000',
  },
}

SCSS

$custom: #643e7c;
$custom-light: #9274a2;
$custom-dark: #000000;

JSON

{
  "hex": "#643e7c",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 124
  },
  "hsl": {
    "h": 276.774,
    "s": 33.333,
    "l": 36.471
  },
  "oklch": {
    "l": 0.4357,
    "c": 0.10665,
    "h": 311
  },
  "luminance": 0.0761
}

Semantic roles & 50–950 ramp

primary

#643E7C

secondary

#85A670

accent

#C95E88

background

#F9F7FA

surface

#F1EDF3

border

#CBC8CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643E7C

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

Preview Lab → · Contrast checker → · Palette generator →