#643C7C#643C7C

#643C7C is a dark, moderate violet. Relative luminance 0.074; OKLCH L 43.2% C 0.110 H 311.4°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX#643C7C
RGBrgb(100, 60, 124)
HSLhsl(278, 35%, 36%)
HSVhsv(278, 52%, 49%)
CMYKcmyk(19.4%, 51.6%, 0%, 51.4%)
CIE-LABlab(32.69, 30.10, -29.62)
CIE-LCHlch(32.69, 42.23, 315.46°)
OKLaboklab(43.23% 0.073 -0.0826)
OKLCHoklch(43.23% 0.11 311.4)
XYZxyz(10.5088, 7.3965, 19.9389)
Luminance0.0740 (WCAG relative)
Temperaturecool
Familyviolet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#643C7C #547C3C
analogous
#443C7C #643C7C #7C3C74
triadic
#643C7C #7C643C #3C7C64
tetradic
#643C7C #7C443C #547C3C #3C747C
square
#643C7C #7C443C #547C3C #3C747C
split-complementary
#643C7C #747C3C #3C7C44
monochromatic
#21142A #432853 #643C7C #8550A5 #A276BD

Accessibility & contrast

On white

8.47
#643C7C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.48
#643C7C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C7C
8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##643C7C#FFFFFF#000000##FFFFFF
##643C7C1.008.472.488.47
#FFFFFF8.471.0021.001.00
#0000002.4821.001.0021.00
##FFFFFF8.471.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2C4B7E
Deuteranopia (green-blind)
#384E7A
Tritanopia (blue-blind)
#614656
Achromatopsia (no color)
#4D4D4D

Design tokens & code

CSS
--color: #643c7c;
/* rgb */ color: rgb(100, 60, 124);
/* oklch */ color: oklch(43.2% 0.110 311.4);
Tailwind
colors: {
  custom: {
    50: '#9273a2',
    500: '#643c7c',
    950: '#000000',
  },
}
SCSS
$custom: #643c7c;
$custom-light: #9273a2;
$custom-dark: #000000;
JSON
{
  "hex": "#643c7c",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 124
  },
  "hsl": {
    "h": 277.5,
    "s": 34.783,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43225,
    "c": 0.11026,
    "h": 311.4
  },
  "luminance": 0.07396
}

Semantic roles & 50–950 ramp

primary
#643C7C
secondary
#83A66D
accent
#CB5D86
background
#F9F7FA
surface
#F1EDF3
border
#CBC8CD
text
#0D080F
muted
#7E7B7F

Preview Lab

Preview with #643C7C

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

Preview Lab → · Contrast checker → · Palette generator →

#643C7C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva