#643F7D#643F7D

#643F7D is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.8% C 0.106 H 310.2°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#643F7D
RGB	rgb(100, 63, 125)
HSL	hsl(276, 33%, 37%)
HSV	hsv(276, 50%, 49%)
CMYK	cmyk(20%, 49.6%, 0%, 51%)
CIE-LAB	lab(33.45, 28.55, -29.05)
CIE-LCH	lch(33.45, 40.73, 314.50°)
OKLab	oklab(43.8% 0.0685 -0.081)
OKLCH	oklch(43.8% 0.106 310.2)
XYZ	xyz(10.7340, 7.7452, 20.3276)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F7D #587D3F

analogous

#453F7D #643F7D #7D3F77

triadic

#643F7D #7D643F #3F7D64

tetradic

#643F7D #7D453F #587D3F #3F777D

square

#643F7D #7D453F #587D3F #3F777D

split-complementary

#643F7D #777D3F #3F7D45

monochromatic

#23162C #432A54 #643F7D #8554A6 #A27ABC

Accessibility & contrast

On white

8.24

#643F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#643F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F7D

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F7D	#FFFFFF	#000000	##FFFFFF
##643F7D	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)

#304D7F

Deuteranopia (green-blind)

#3A4F7B

Tritanopia (blue-blind)

#614958

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643f7d;
/* rgb */ color: rgb(100, 63, 125);
/* oklch */ color: oklch(43.8% 0.106 310.2);

Tailwind

colors: {
  custom: {
    50: '#9275a3',
    500: '#643f7d',
    950: '#000000',
  },
}

SCSS

$custom: #643f7d;
$custom-light: #9275a3;
$custom-dark: #000000;

JSON

{
  "hex": "#643f7d",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 275.806,
    "s": 32.979,
    "l": 36.863
  },
  "oklch": {
    "l": 0.43803,
    "c": 0.10612,
    "h": 310.2
  },
  "luminance": 0.07745
}

Semantic roles & 50–950 ramp

primary

#643F7D

secondary

#87A671

accent

#C95F8A

background

#F9F7FA

surface

#F1EDF3

border

#CBC8CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643F7D

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

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