#663F99#663F99

#663F99 is a mid, vivid violet. Relative luminance 0.087; OKLCH L 45.8% C 0.143 H 300.9°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#663F99
RGB	rgb(102, 63, 153)
HSL	hsl(266, 42%, 42%)
HSV	hsv(266, 59%, 60%)
CMYK	cmyk(33.3%, 58.8%, 0%, 40%)
CIE-LAB	lab(35.36, 36.27, -43.19)
CIE-LCH	lch(35.36, 56.40, 310.02°)
OKLab	oklab(45.81% 0.0732 -0.1223)
OKLCH	oklch(45.81% 0.143 300.9)
XYZ	xyz(13.0054, 8.6796, 31.1210)
Luminance	0.0868 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663F99 #72993F

analogous

#3F4599 #663F99 #933F99

triadic

#663F99 #99663F #3F9966

tetradic

#663F99 #993F45 #72993F #3F9993

square

#663F99 #993F45 #72993F #3F9993

split-complementary

#663F99 #99933F #45993F

monochromatic

#2C1B42 #492D6E #663F99 #845ABB #A485CD

Accessibility & contrast

On white

7.68

#663F99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#663F99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663F99

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663F99	#FFFFFF	#000000	##FFFFFF
##663F99	1.00	7.68	2.74	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15539C

Deuteranopia (green-blind)

#265397

Tritanopia (blue-blind)

#5C5166

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #663f99;
/* rgb */ color: rgb(102, 63, 153);
/* oklch */ color: oklch(45.8% 0.143 300.9);

Tailwind

colors: {
  custom: {
    50: '#9576b8',
    500: '#663f99',
    950: '#000000',
  },
}

SCSS

$custom: #663f99;
$custom-light: #9576b8;
$custom-dark: #000000;

JSON

{
  "hex": "#663f99",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 153
  },
  "hsl": {
    "h": 266,
    "s": 41.667,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45813,
    "c": 0.14252,
    "h": 300.9
  },
  "luminance": 0.0868
}

Semantic roles & 50–950 ramp

primary

#663F99

secondary

#9EB77C

accent

#D1569C

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0811

muted

#7E7B80

Preview Lab

Preview with #663F99

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

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