#663D9D#663D9D

#663D9D is a mid, vivid violet. Relative luminance 0.086; OKLCH L 45.8% C 0.151 H 300.2°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#663D9D
RGB	rgb(102, 61, 157)
HSL	hsl(266, 44%, 43%)
HSV	hsv(266, 61%, 62%)
CMYK	cmyk(35%, 61.1%, 0%, 38.4%)
CIE-LAB	lab(35.20, 38.47, -45.88)
CIE-LCH	lch(35.20, 59.87, 309.98°)
OKLab	oklab(45.78% 0.0757 -0.1302)
OKLCH	oklch(45.78% 0.151 300.2)
XYZ	xyz(13.2326, 8.5965, 32.8539)
Luminance	0.0860 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663D9D #749D3D

analogous

#3D449D #663D9D #963D9D

triadic

#663D9D #9D663D #3D9D66

tetradic

#663D9D #9D3D44 #749D3D #3D9D96

square

#663D9D #9D3D44 #749D3D #3D9D96

split-complementary

#663D9D #9D963D #449D3D

monochromatic

#2D1B45 #492C71 #663D9D #8459BE #A585D0

Accessibility & contrast

On white

7.72

#663D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#663D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663D9D

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663D9D	#FFFFFF	#000000	##FFFFFF
##663D9D	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0152A0

Deuteranopia (green-blind)

#1D529B

Tritanopia (blue-blind)

#5A5167

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #663d9d;
/* rgb */ color: rgb(102, 61, 157);
/* oklch */ color: oklch(45.8% 0.151 300.2);

Tailwind

colors: {
  custom: {
    50: '#9574ba',
    500: '#663d9d',
    950: '#000000',
  },
}

SCSS

$custom: #663d9d;
$custom-light: #9574ba;
$custom-dark: #000000;

JSON

{
  "hex": "#663d9d",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 157
  },
  "hsl": {
    "h": 265.625,
    "s": 44.037,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45778,
    "c": 0.15058,
    "h": 300.2
  },
  "luminance": 0.08597
}

Semantic roles & 50–950 ramp

primary

#663D9D

secondary

#9FBA7C

accent

#D4549D

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #663D9D

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

Preview Lab → · Contrast checker → · Palette generator →