#663A89#663A89

#663A89 is a dark, vivid violet. Relative luminance 0.077; OKLCH L 43.9% C 0.131 H 307.6°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#663A89
RGB	rgb(102, 58, 137)
HSL	hsl(273, 41%, 38%)
HSV	hsv(273, 58%, 54%)
CMYK	cmyk(25.5%, 57.7%, 0%, 46.3%)
CIE-LAB	lab(33.26, 35.03, -36.77)
CIE-LCH	lch(33.26, 50.79, 313.61°)
OKLab	oklab(43.95% 0.0797 -0.1034)
OKLCH	oklch(43.95% 0.131 307.6)
XYZ	xyz(11.5070, 7.6572, 24.5338)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663A89 #5D893A

analogous

#3E3A89 #663A89 #893A84

triadic

#663A89 #89663A #3A8966

tetradic

#663A89 #893E3A #5D893A #3A8489

square

#663A89 #893E3A #5D893A #3A8489

split-complementary

#663A89 #84893A #3A893E

monochromatic

#261633 #46285E #663A89 #864DB4 #A378C6

Accessibility & contrast

On white

8.30

#663A89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#663A89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663A89

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663A89	#FFFFFF	#000000	##FFFFFF
##663A89	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)

#1F4D8C

Deuteranopia (green-blind)

#2F4F87

Tritanopia (blue-blind)

#61495C

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #663a89;
/* rgb */ color: rgb(102, 58, 137);
/* oklch */ color: oklch(43.9% 0.131 307.6);

Tailwind

colors: {
  custom: {
    50: '#9472ac',
    500: '#663a89',
    950: '#000000',
  },
}

SCSS

$custom: #663a89;
$custom-light: #9472ac;
$custom-dark: #000000;

JSON

{
  "hex": "#663a89",
  "rgb": {
    "r": 102,
    "g": 58,
    "b": 137
  },
  "hsl": {
    "h": 273.418,
    "s": 40.513,
    "l": 38.235
  },
  "oklch": {
    "l": 0.43945,
    "c": 0.13057,
    "h": 307.6
  },
  "luminance": 0.07657
}

Semantic roles & 50–950 ramp

primary

#663A89

secondary

#8CAF70

accent

#D0578D

background

#F9F7FA

surface

#F2EDF4

border

#CCC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #663A89

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

Preview Lab → · Contrast checker → · Palette generator →