#643F70#643F70

#643F70 is a dark, moderate purple. Relative luminance 0.074; OKLCH L 43.1% C 0.090 H 317.6°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#643F70
RGB	rgb(100, 63, 112)
HSL	hsl(285, 28%, 34%)
HSV	hsv(285, 44%, 44%)
CMYK	cmyk(10.7%, 43.7%, 0%, 56.1%)
CIE-LAB	lab(32.78, 25.46, -21.96)
CIE-LCH	lch(32.78, 33.63, 319.22°)
OKLab	oklab(43.08% 0.0662 -0.0605)
OKLCH	oklch(43.08% 0.09 317.6)
XYZ	xyz(9.9573, 7.4345, 16.2366)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F70 #4B703F

analogous

#4C3F70 #643F70 #703F64

triadic

#643F70 #70643F #3F7064

tetradic

#643F70 #704C3F #4B703F #3F6470

square

#643F70 #704C3F #4B703F #3F6470

split-complementary

#643F70 #64703F #3F704C

monochromatic

#1E1322 #412949 #643F70 #875597 #A477B2

Accessibility & contrast

On white

8.44

#643F70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#643F70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F70

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F70	#FFFFFF	#000000	##FFFFFF
##643F70	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#374B72

Deuteranopia (green-blind)

#414E6F

Tritanopia (blue-blind)

#644552

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643f70;
/* rgb */ color: rgb(100, 63, 112);
/* oklch */ color: oklch(43.1% 0.090 317.6);

Tailwind

colors: {
  custom: {
    50: '#917599',
    500: '#643f70',
    950: '#000000',
  },
}

SCSS

$custom: #643f70;
$custom-light: #917599;
$custom-dark: #000000;

JSON

{
  "hex": "#643f70",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 112
  },
  "hsl": {
    "h": 285.306,
    "s": 28,
    "l": 34.314
  },
  "oklch": {
    "l": 0.43083,
    "c": 0.0897,
    "h": 317.6
  },
  "luminance": 0.07434
}

Semantic roles & 50–950 ramp

primary

#643F70

secondary

#799D6E

accent

#C4637B

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643F70

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

Preview Lab → · Contrast checker → · Palette generator →