#643B60#643B60

#643B60 is a dark, moderate purple. Relative luminance 0.067; OKLCH L 41.6% C 0.079 H 330.4°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#643B60
RGB	rgb(100, 59, 96)
HSL	hsl(306, 26%, 31%)
HSV	hsv(306, 41%, 39%)
CMYK	cmyk(0%, 41%, 4%, 60.8%)
CIE-LAB	lab(31.07, 24.41, -14.42)
CIE-LCH	lch(31.07, 28.35, 329.43°)
OKLab	oklab(41.56% 0.0689 -0.0391)
OKLCH	oklch(41.56% 0.079 330.4)
XYZ	xyz(8.9307, 6.6822, 11.8834)
Luminance	0.0668 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B60 #3B643F

analogous

#533B64 #643B60 #643B4B

triadic

#643B60 #60643B #3B6064

tetradic

#643B60 #64533B #3B643F #3B4B64

square

#643B60 #64533B #3B643F #3B4B64

split-complementary

#643B60 #4B643B #3B6453

monochromatic

#170E16 #3E243B #643B60 #8A5285 #AA6FA4

Accessibility & contrast

On white

8.99

#643B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#643B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B60

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B60	#FFFFFF	#000000	##FFFFFF
##643B60	1.00	8.99	2.34	8.99
#FFFFFF	8.99	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#394661

Deuteranopia (green-blind)

#444B5F

Tritanopia (blue-blind)

#673E49

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #643b60;
/* rgb */ color: rgb(100, 59, 96);
/* oklch */ color: oklch(41.6% 0.079 330.4);

Tailwind

colors: {
  custom: {
    50: '#91728d',
    500: '#643b60',
    950: '#000000',
  },
}

SCSS

$custom: #643b60;
$custom-light: #91728d;
$custom-dark: #000000;

JSON

{
  "hex": "#643b60",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 96
  },
  "hsl": {
    "h": 305.854,
    "s": 25.786,
    "l": 31.176
  },
  "oklch": {
    "l": 0.4156,
    "c": 0.07917,
    "h": 330.4
  },
  "luminance": 0.06682
}

Semantic roles & 50–950 ramp

primary

#643B60

secondary

#67946B

accent

#C26F66

background

#F9F6F8

surface

#F1ECF0

border

#CBC7CB

text

#0D080C

muted

#7E7B7D

Preview Lab

Preview with #643B60

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

Preview Lab → · Contrast checker → · Palette generator →