#663A8A#663A8A

#663A8A is a dark, vivid violet. Relative luminance 0.077; OKLCH L 44.0% C 0.132 H 307.2°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#663A8A
RGB	rgb(102, 58, 138)
HSL	hsl(273, 41%, 38%)
HSV	hsv(273, 58%, 54%)
CMYK	cmyk(26.1%, 58%, 0%, 45.9%)
CIE-LAB	lab(33.32, 35.28, -37.29)
CIE-LCH	lch(33.32, 51.33, 313.41°)
OKLab	oklab(44.01% 0.0797 -0.105)
OKLCH	oklch(44.01% 0.132 307.2)
XYZ	xyz(11.5791, 7.6860, 24.9134)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663A8A #5E8A3A

analogous

#3E3A8A #663A8A #8A3A86

triadic

#663A8A #8A663A #3A8A66

tetradic

#663A8A #8A3E3A #5E8A3A #3A868A

square

#663A8A #8A3E3A #5E8A3A #3A868A

split-complementary

#663A8A #868A3A #3A8A3E

monochromatic

#261634 #46285F #663A8A #864DB4 #A378C6

Accessibility & contrast

On white

8.28

#663A8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#663A8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663A8A

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663A8A	#FFFFFF	#000000	##FFFFFF
##663A8A	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4D8D

Deuteranopia (green-blind)

#2E4F88

Tritanopia (blue-blind)

#60495C

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #663a8a;
/* rgb */ color: rgb(102, 58, 138);
/* oklch */ color: oklch(44.0% 0.132 307.2);

Tailwind

colors: {
  custom: {
    50: '#9472ac',
    500: '#663a8a',
    950: '#000000',
  },
}

SCSS

$custom: #663a8a;
$custom-light: #9472ac;
$custom-dark: #000000;

JSON

{
  "hex": "#663a8a",
  "rgb": {
    "r": 102,
    "g": 58,
    "b": 138
  },
  "hsl": {
    "h": 273,
    "s": 40.816,
    "l": 38.431
  },
  "oklch": {
    "l": 0.4401,
    "c": 0.1318,
    "h": 307.2
  },
  "luminance": 0.07686
}

Semantic roles & 50–950 ramp

primary

#663A8A

secondary

#8DB070

accent

#D1578E

background

#F9F7FA

surface

#F2EDF4

border

#CCC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #663A8A

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

Preview Lab → · Contrast checker → · Palette generator →