#663B86#663B86

#663B86 is a dark, vivid violet. Relative luminance 0.077; OKLCH L 43.9% C 0.125 H 308.6°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#663B86
RGB	rgb(102, 59, 134)
HSL	hsl(274, 39%, 38%)
HSV	hsv(274, 56%, 53%)
CMYK	cmyk(23.9%, 56%, 0%, 47.5%)
CIE-LAB	lab(33.29, 33.71, -34.86)
CIE-LCH	lch(33.29, 48.50, 314.04°)
OKLab	oklab(43.91% 0.0781 -0.0979)
OKLCH	oklch(43.91% 0.125 308.6)
XYZ	xyz(11.3457, 7.6741, 23.4332)
Luminance	0.0767 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B86 #5B863B

analogous

#403B86 #663B86 #863B80

triadic

#663B86 #86663B #3B8666

tetradic

#663B86 #86403B #5B863B #3B8086

square

#663B86 #86403B #5B863B #3B8086

split-complementary

#663B86 #80863B #3B8640

monochromatic

#251631 #46285C #663B86 #864EB0 #A378C4

Accessibility & contrast

On white

8.28

#663B86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#663B86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B86

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B86	#FFFFFF	#000000	##FFFFFF
##663B86	1.00	8.28	2.53	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244D88

Deuteranopia (green-blind)

#324F84

Tritanopia (blue-blind)

#62485A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #663b86;
/* rgb */ color: rgb(102, 59, 134);
/* oklch */ color: oklch(43.9% 0.125 308.6);

Tailwind

colors: {
  custom: {
    50: '#9473aa',
    500: '#663b86',
    950: '#000000',
  },
}

SCSS

$custom: #663b86;
$custom-light: #9473aa;
$custom-dark: #000000;

JSON

{
  "hex": "#663b86",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 134
  },
  "hsl": {
    "h": 274.4,
    "s": 38.86,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43913,
    "c": 0.12521,
    "h": 308.6
  },
  "luminance": 0.07674
}

Semantic roles & 50–950 ramp

primary

#663B86

secondary

#8AAD70

accent

#CF598B

background

#F9F7FA

surface

#F2EDF4

border

#CCC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #663B86

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

Preview Lab → · Contrast checker → · Palette generator →