#643E77#643E77

#643E77 is a dark, moderate purple. Relative luminance 0.075; OKLCH L 43.3% C 0.100 H 313.6°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#643E77
RGB	rgb(100, 62, 119)
HSL	hsl(280, 31%, 35%)
HSV	hsv(280, 48%, 47%)
CMYK	cmyk(16%, 47.9%, 0%, 53.3%)
CIE-LAB	lab(32.89, 27.70, -26.18)
CIE-LCH	lch(32.89, 38.12, 316.62°)
OKLab	oklab(43.28% 0.0692 -0.0727)
OKLCH	oklch(43.28% 0.1 313.6)
XYZ	xyz(10.3074, 7.4867, 18.3513)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E77 #51773E

analogous

#473E77 #643E77 #773E6D

triadic

#643E77 #77643E #3E7764

tetradic

#643E77 #77473E #51773E #3E6D77

square

#643E77 #77473E #51773E #3E6D77

split-complementary

#643E77 #6D773E #3E7747

monochromatic

#201427 #42294F #643E77 #86539F #A377B8

Accessibility & contrast

On white

8.41

#643E77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#643E77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E77

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E77	#FFFFFF	#000000	##FFFFFF
##643E77	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324B79

Deuteranopia (green-blind)

#3D4E75

Tritanopia (blue-blind)

#624655

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643e77;
/* rgb */ color: rgb(100, 62, 119);
/* oklch */ color: oklch(43.3% 0.100 313.6);

Tailwind

colors: {
  custom: {
    50: '#91749e',
    500: '#643e77',
    950: '#000000',
  },
}

SCSS

$custom: #643e77;
$custom-light: #91749e;
$custom-dark: #000000;

JSON

{
  "hex": "#643e77",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 119
  },
  "hsl": {
    "h": 280,
    "s": 31.492,
    "l": 35.49
  },
  "oklch": {
    "l": 0.43284,
    "c": 0.10033,
    "h": 313.6
  },
  "luminance": 0.07486
}

Semantic roles & 50–950 ramp

primary

#643E77

secondary

#80A36E

accent

#C86083

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643E77

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

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