#643B80#643B80

#643B80 is a dark, moderate violet. Relative luminance 0.074; OKLCH L 43.3% C 0.117 H 309.8°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#643B80
RGB	rgb(100, 59, 128)
HSL	hsl(276, 37%, 37%)
HSV	hsv(276, 54%, 50%)
CMYK	cmyk(21.9%, 53.9%, 0%, 49.8%)
CIE-LAB	lab(32.69, 31.66, -32.12)
CIE-LCH	lch(32.69, 45.10, 314.59°)
OKLab	oklab(43.3% 0.0749 -0.0899)
OKLCH	oklch(43.3% 0.117 309.8)
XYZ	xyz(10.7150, 7.3959, 21.2810)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B80 #57803B

analogous

#423B80 #643B80 #803B7A

triadic

#643B80 #80643B #3B8064

tetradic

#643B80 #80423B #57803B #3B7A80

square

#643B80 #80423B #57803B #3B7A80

split-complementary

#643B80 #7A803B #3B8042

monochromatic

#23142C #432856 #643B80 #854EAA #A276C0

Accessibility & contrast

On white

8.47

#643B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#643B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B80

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B80	#FFFFFF	#000000	##FFFFFF
##643B80	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284B82

Deuteranopia (green-blind)

#354E7E

Tritanopia (blue-blind)

#604757

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643b80;
/* rgb */ color: rgb(100, 59, 128);
/* oklch */ color: oklch(43.3% 0.117 309.8);

Tailwind

colors: {
  custom: {
    50: '#9272a5',
    500: '#643b80',
    950: '#000000',
  },
}

SCSS

$custom: #643b80;
$custom-light: #9272a5;
$custom-dark: #000000;

JSON

{
  "hex": "#643b80",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 128
  },
  "hsl": {
    "h": 275.652,
    "s": 36.898,
    "l": 36.667
  },
  "oklch": {
    "l": 0.43298,
    "c": 0.11703,
    "h": 309.8
  },
  "luminance": 0.07396
}

Semantic roles & 50–950 ramp

primary

#643B80

secondary

#86A96E

accent

#CD5B89

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643B80

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

Preview Lab → · Contrast checker → · Palette generator →