#643D75#643D75

#643D75 is a dark, moderate purple. Relative luminance 0.073; OKLCH L 43.0% C 0.100 H 314.9°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#643D75
RGB	rgb(100, 61, 117)
HSL	hsl(282, 31%, 35%)
HSV	hsv(282, 48%, 46%)
CMYK	cmyk(14.5%, 47.9%, 0%, 54.1%)
CIE-LAB	lab(32.55, 27.83, -25.46)
CIE-LCH	lch(32.55, 37.72, 317.55°)
OKLab	oklab(43% 0.0704 -0.0706)
OKLCH	oklch(43% 0.1 314.9)
XYZ	xyz(10.1347, 7.3314, 17.7074)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D75 #4E753D

analogous

#483D75 #643D75 #753D6A

triadic

#643D75 #75643D #3D7564

tetradic

#643D75 #75483D #4E753D #3D6A75

square

#643D75 #75483D #4E753D #3D6A75

split-complementary

#643D75 #6A753D #3D7548

monochromatic

#1F1325 #42284D #643D75 #86529D #A375B7

Accessibility & contrast

On white

8.52

#643D75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#643D75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D75

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D75	#FFFFFF	#000000	##FFFFFF
##643D75	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324A77

Deuteranopia (green-blind)

#3D4E73

Tritanopia (blue-blind)

#634553

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643d75;
/* rgb */ color: rgb(100, 61, 117);
/* oklch */ color: oklch(43.0% 0.100 314.9);

Tailwind

colors: {
  custom: {
    50: '#91739d',
    500: '#643d75',
    950: '#000000',
  },
}

SCSS

$custom: #643d75;
$custom-light: #91739d;
$custom-dark: #000000;

JSON

{
  "hex": "#643d75",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 117
  },
  "hsl": {
    "h": 281.786,
    "s": 31.461,
    "l": 34.902
  },
  "oklch": {
    "l": 0.42996,
    "c": 0.09969,
    "h": 314.9
  },
  "luminance": 0.07331
}

Semantic roles & 50–950 ramp

primary

#643D75

secondary

#7DA16C

accent

#C86080

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643D75

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

Preview Lab → · Contrast checker → · Palette generator →