#663B73#663B73

#663B73 is a dark, moderate purple. Relative luminance 0.072; OKLCH L 42.8% C 0.102 H 318.0°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#663B73
RGB	rgb(102, 59, 115)
HSL	hsl(286, 32%, 34%)
HSV	hsv(286, 49%, 45%)
CMYK	cmyk(11.3%, 48.7%, 0%, 54.9%)
CIE-LAB	lab(32.24, 29.20, -24.67)
CIE-LCH	lch(32.24, 38.23, 319.80°)
OKLab	oklab(42.79% 0.0759 -0.0683)
OKLCH	oklch(42.79% 0.102 318)
XYZ	xyz(10.1375, 7.1908, 17.0703)
Luminance	0.0719 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B73 #48733B

analogous

#4A3B73 #663B73 #733B64

triadic

#663B73 #73663B #3B7366

tetradic

#663B73 #734A3B #48733B #3B6473

square

#663B73 #734A3B #48733B #3B6473

split-complementary

#663B73 #64733B #3B734A

monochromatic

#1E1122 #42264B #663B73 #8A509B #A772B7

Accessibility & contrast

On white

8.61

#663B73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#663B73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B73

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B73	#FFFFFF	#000000	##FFFFFF
##663B73	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314975

Deuteranopia (green-blind)

#3D4D71

Tritanopia (blue-blind)

#664351

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #663b73;
/* rgb */ color: rgb(102, 59, 115);
/* oklch */ color: oklch(42.8% 0.102 318.0);

Tailwind

colors: {
  custom: {
    50: '#93729b',
    500: '#663b73',
    950: '#000000',
  },
}

SCSS

$custom: #663b73;
$custom-light: #93729b;
$custom-dark: #000000;

JSON

{
  "hex": "#663b73",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 115
  },
  "hsl": {
    "h": 286.071,
    "s": 32.184,
    "l": 34.118
  },
  "oklch": {
    "l": 0.42786,
    "c": 0.10205,
    "h": 318
  },
  "luminance": 0.07191
}

Semantic roles & 50–950 ramp

primary

#663B73

secondary

#76A069

accent

#C85F78

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #663B73

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

Preview Lab → · Contrast checker → · Palette generator →