#643F7C#643F7C

#643F7C is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.7% C 0.105 H 310.7°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#643F7C
RGB	rgb(100, 63, 124)
HSL	hsl(276, 33%, 37%)
HSV	hsv(276, 49%, 49%)
CMYK	cmyk(19.4%, 49.2%, 0%, 51.4%)
CIE-LAB	lab(33.39, 28.31, -28.52)
CIE-LCH	lch(33.39, 40.18, 314.79°)
OKLab	oklab(43.75% 0.0684 -0.0795)
OKLCH	oklch(43.75% 0.105 310.7)
XYZ	xyz(10.6705, 7.7198, 19.9928)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F7C #577C3F

analogous

#463F7C #643F7C #7C3F76

triadic

#643F7C #7C643F #3F7C64

tetradic

#643F7C #7C463F #577C3F #3F767C

square

#643F7C #7C463F #577C3F #3F767C

split-complementary

#643F7C #767C3F #3F7C46

monochromatic

#23162B #432A53 #643F7C #8554A5 #A27ABB

Accessibility & contrast

On white

8.25

#643F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#643F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F7C

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F7C	#FFFFFF	#000000	##FFFFFF
##643F7C	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314D7E

Deuteranopia (green-blind)

#3B4F7A

Tritanopia (blue-blind)

#614957

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643f7c;
/* rgb */ color: rgb(100, 63, 124);
/* oklch */ color: oklch(43.7% 0.105 310.7);

Tailwind

colors: {
  custom: {
    50: '#9275a2',
    500: '#643f7c',
    950: '#000000',
  },
}

SCSS

$custom: #643f7c;
$custom-light: #9275a2;
$custom-dark: #000000;

JSON

{
  "hex": "#643f7c",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 124
  },
  "hsl": {
    "h": 276.393,
    "s": 32.62,
    "l": 36.667
  },
  "oklch": {
    "l": 0.43745,
    "c": 0.10484,
    "h": 310.7
  },
  "luminance": 0.0772
}

Semantic roles & 50–950 ramp

primary

#643F7C

secondary

#86A671

accent

#C95F89

background

#F9F7FA

surface

#F1EDF3

border

#CBC8CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643F7C

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

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