#643A7F#643A7F

#643A7F is a dark, moderate violet. Relative luminance 0.073; OKLCH L 43.1% C 0.118 H 310.5°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#643A7F
RGB	rgb(100, 58, 127)
HSL	hsl(277, 37%, 36%)
HSV	hsv(277, 54%, 50%)
CMYK	cmyk(21.3%, 54.3%, 0%, 50.2%)
CIE-LAB	lab(32.41, 32.00, -31.94)
CIE-LCH	lch(32.41, 45.21, 315.05°)
OKLab	oklab(43.07% 0.0763 -0.0894)
OKLCH	oklch(43.07% 0.118 310.5)
XYZ	xyz(10.5986, 7.2679, 20.9191)
Luminance	0.0727 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A7F #557F3A

analogous

#423A7F #643A7F #7F3A78

triadic

#643A7F #7F643A #3A7F64

tetradic

#643A7F #7F423A #557F3A #3A787F

square

#643A7F #7F423A #557F3A #3A787F

split-complementary

#643A7F #787F3A #3A7F42

monochromatic

#22142B #432755 #643A7F #854DA9 #A274BF

Accessibility & contrast

On white

8.56

#643A7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#643A7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A7F

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A7F	#FFFFFF	#000000	##FFFFFF
##643A7F	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274A81

Deuteranopia (green-blind)

#344D7D

Tritanopia (blue-blind)

#614657

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643a7f;
/* rgb */ color: rgb(100, 58, 127);
/* oklch */ color: oklch(43.1% 0.118 310.5);

Tailwind

colors: {
  custom: {
    50: '#9272a4',
    500: '#643a7f',
    950: '#000000',
  },
}

SCSS

$custom: #643a7f;
$custom-light: #9272a4;
$custom-dark: #000000;

JSON

{
  "hex": "#643a7f",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 127
  },
  "hsl": {
    "h": 276.522,
    "s": 37.297,
    "l": 36.275
  },
  "oklch": {
    "l": 0.4307,
    "c": 0.11752,
    "h": 310.5
  },
  "luminance": 0.07268
}

Semantic roles & 50–950 ramp

primary

#643A7F

secondary

#84A96C

accent

#CD5B87

background

#F9F6FA

surface

#F1ECF4

border

#CBC7CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643A7F

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

Preview Lab → · Contrast checker → · Palette generator →