#643D85#643D85

#643D85 is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.9% C 0.120 H 307.2°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#643D85
RGB	rgb(100, 61, 133)
HSL	hsl(273, 37%, 38%)
HSV	hsv(273, 54%, 52%)
CMYK	cmyk(24.8%, 54.1%, 0%, 47.8%)
CIE-LAB	lab(33.44, 31.73, -34.03)
CIE-LCH	lch(33.44, 46.53, 312.99°)
OKLab	oklab(43.94% 0.0724 -0.0955)
OKLCH	oklch(43.94% 0.12 307.2)
XYZ	xyz(11.1571, 7.7404, 23.0920)
Luminance	0.0774 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D85 #5E853D

analogous

#403D85 #643D85 #853D82

triadic

#643D85 #85643D #3D8564

tetradic

#643D85 #85403D #5E853D #3D8285

square

#643D85 #85403D #5E853D #3D8285

split-complementary

#643D85 #82853D #3D8540

monochromatic

#251731 #442A5B #643D85 #8450AF #A17AC2

Accessibility & contrast

On white

8.24

#643D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#643D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D85

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D85	#FFFFFF	#000000	##FFFFFF
##643D85	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274D87

Deuteranopia (green-blind)

#334F83

Tritanopia (blue-blind)

#5F4A5B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643d85;
/* rgb */ color: rgb(100, 61, 133);
/* oklch */ color: oklch(43.9% 0.120 307.2);

Tailwind

colors: {
  custom: {
    50: '#9274a9',
    500: '#643d85',
    950: '#000000',
  },
}

SCSS

$custom: #643d85;
$custom-light: #9274a9;
$custom-dark: #000000;

JSON

{
  "hex": "#643d85",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 133
  },
  "hsl": {
    "h": 272.5,
    "s": 37.113,
    "l": 38.039
  },
  "oklch": {
    "l": 0.43943,
    "c": 0.11988,
    "h": 307.2
  },
  "luminance": 0.0774
}

Semantic roles & 50–950 ramp

primary

#643D85

secondary

#8CAC72

accent

#CD5B8F

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643D85

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

Preview Lab → · Contrast checker → · Palette generator →