#643E7A#643E7A

#643E7A is a dark, moderate violet. Relative luminance 0.076; OKLCH L 43.5% C 0.104 H 312.0°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#643E7A
RGB	rgb(100, 62, 122)
HSL	hsl(278, 33%, 36%)
HSV	hsv(278, 49%, 48%)
CMYK	cmyk(18%, 49.2%, 0%, 52.2%)
CIE-LAB	lab(33.05, 28.42, -27.81)
CIE-LCH	lch(33.05, 39.76, 315.62°)
OKLab	oklab(43.45% 0.0696 -0.0774)
OKLCH	oklch(43.45% 0.104 312)
XYZ	xyz(10.4904, 7.5599, 19.3152)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E7A #547A3E

analogous

#463E7A #643E7A #7A3E72

triadic

#643E7A #7A643E #3E7A64

tetradic

#643E7A #7A463E #547A3E #3E727A

square

#643E7A #7A463E #547A3E #3E727A

split-complementary

#643E7A #727A3E #3E7A46

monochromatic

#211529 #432951 #643E7A #8553A3 #A278BA

Accessibility & contrast

On white

8.36

#643E7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#643E7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E7A

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E7A	#FFFFFF	#000000	##FFFFFF
##643E7A	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314C7C

Deuteranopia (green-blind)

#3B4F78

Tritanopia (blue-blind)

#624756

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643e7a;
/* rgb */ color: rgb(100, 62, 122);
/* oklch */ color: oklch(43.5% 0.104 312.0);

Tailwind

colors: {
  custom: {
    50: '#9174a1',
    500: '#643e7a',
    950: '#000000',
  },
}

SCSS

$custom: #643e7a;
$custom-light: #9174a1;
$custom-dark: #000000;

JSON

{
  "hex": "#643e7a",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 122
  },
  "hsl": {
    "h": 278,
    "s": 32.609,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43454,
    "c": 0.10412,
    "h": 312
  },
  "luminance": 0.0756
}

Semantic roles & 50–950 ramp

primary

#643E7A

secondary

#83A56F

accent

#C95F86

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080F

muted

#7E7B7E

Preview Lab

Preview with #643E7A

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

Preview Lab → · Contrast checker → · Palette generator →