#643D80#643D80

#643D80 is a dark, moderate violet. Relative luminance 0.076; OKLCH L 43.6% C 0.114 H 309.3°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#643D80
RGB	rgb(100, 61, 128)
HSL	hsl(275, 35%, 37%)
HSV	hsv(275, 52%, 50%)
CMYK	cmyk(21.9%, 52.3%, 0%, 49.8%)
CIE-LAB	lab(33.15, 30.48, -31.39)
CIE-LCH	lch(33.15, 43.76, 314.16°)
OKLab	oklab(43.64% 0.0719 -0.0878)
OKLCH	oklch(43.64% 0.114 309.3)
XYZ	xyz(10.8198, 7.6055, 21.3159)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D80 #59803D

analogous

#423D80 #643D80 #803D7B

triadic

#643D80 #80643D #3D8064

tetradic

#643D80 #80423D #59803D #3D7B80

square

#643D80 #80423D #59803D #3D7B80

split-complementary

#643D80 #7B803D #3D8042

monochromatic

#23152D #442957 #643D80 #8451A9 #A178BF

Accessibility & contrast

On white

8.33

#643D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#643D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D80

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D80	#FFFFFF	#000000	##FFFFFF
##643D80	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)

#2B4C82

Deuteranopia (green-blind)

#374F7E

Tritanopia (blue-blind)

#604858

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643d80;
/* rgb */ color: rgb(100, 61, 128);
/* oklch */ color: oklch(43.6% 0.114 309.3);

Tailwind

colors: {
  custom: {
    50: '#9274a5',
    500: '#643d80',
    950: '#000000',
  },
}

SCSS

$custom: #643d80;
$custom-light: #9274a5;
$custom-dark: #000000;

JSON

{
  "hex": "#643d80",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 128
  },
  "hsl": {
    "h": 274.925,
    "s": 35.45,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43635,
    "c": 0.11352,
    "h": 309.3
  },
  "luminance": 0.07605
}

Semantic roles & 50–950 ramp

primary

#643D80

secondary

#88A970

accent

#CB5C8B

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643D80

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

Preview Lab → · Contrast checker → · Palette generator →