#663B85#663B85

#663B85 is a dark, vivid violet. Relative luminance 0.076; OKLCH L 43.8% C 0.124 H 309.0°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#663B85
RGB	rgb(102, 59, 133)
HSL	hsl(275, 39%, 38%)
HSV	hsv(275, 56%, 52%)
CMYK	cmyk(23.3%, 55.6%, 0%, 47.8%)
CIE-LAB	lab(33.24, 33.47, -34.34)
CIE-LCH	lch(33.24, 47.95, 314.26°)
OKLab	oklab(43.85% 0.078 -0.0963)
OKLCH	oklch(43.85% 0.124 309)
XYZ	xyz(11.2763, 7.6463, 23.0676)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B85 #5A853B

analogous

#413B85 #663B85 #853B7F

triadic

#663B85 #85663B #3B8566

tetradic

#663B85 #85413B #5A853B #3B7F85

square

#663B85 #85413B #5A853B #3B7F85

split-complementary

#663B85 #7F853B #3B8541

monochromatic

#251530 #45285B #663B85 #874EAF #A378C3

Accessibility & contrast

On white

8.30

#663B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#663B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B85

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B85	#FFFFFF	#000000	##FFFFFF
##663B85	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254C87

Deuteranopia (green-blind)

#334F83

Tritanopia (blue-blind)

#62485A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #663b85;
/* rgb */ color: rgb(102, 59, 133);
/* oklch */ color: oklch(43.8% 0.124 309.0);

Tailwind

colors: {
  custom: {
    50: '#9473a9',
    500: '#663b85',
    950: '#000000',
  },
}

SCSS

$custom: #663b85;
$custom-light: #9473a9;
$custom-dark: #000000;

JSON

{
  "hex": "#663b85",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 133
  },
  "hsl": {
    "h": 274.865,
    "s": 38.542,
    "l": 37.647
  },
  "oklch": {
    "l": 0.43849,
    "c": 0.12397,
    "h": 309
  },
  "luminance": 0.07646
}

Semantic roles & 50–950 ramp

primary

#663B85

secondary

#89AC6F

accent

#CE598A

background

#F9F7FA

surface

#F2EDF4

border

#CCC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #663B85

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

Preview Lab → · Contrast checker → · Palette generator →