#663BD9#663BD9

#663BD9 is a mid, highly saturated violet. Relative luminance 0.110; OKLCH L 50.3% C 0.224 H 287.9°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#663BD9
RGB	rgb(102, 59, 217)
HSL	hsl(256, 68%, 54%)
HSV	hsv(256, 73%, 85%)
CMYK	cmyk(53%, 72.8%, 0%, 14.9%)
CIE-LAB	lab(39.52, 55.93, -74.16)
CIE-LCH	lch(39.52, 92.88, 307.02°)
OKLab	oklab(50.34% 0.0691 -0.2132)
OKLCH	oklch(50.34% 0.224 287.9)
XYZ	xyz(19.5641, 10.9615, 66.7171)
Luminance	0.1096 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663BD9 #AED93B

analogous

#3B5FD9 #663BD9 #B53BD9

triadic

#663BD9 #D9663B #3BD966

tetradic

#663BD9 #D93B5F #AED93B #3BD9B5

square

#663BD9 #D93B5F #AED93B #3BD9B5

split-complementary

#663BD9 #D9B53B #5FD93B

monochromatic

#351981 #4A23B4 #663BD9 #8E6EE3 #B6A2ED

Accessibility & contrast

On white

6.58

#663BD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#663BD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BD9

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BD9	#FFFFFF	#000000	##FFFFFF
##663BD9	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061DE

Deuteranopia (green-blind)

#0059D6

Tritanopia (blue-blind)

#386687

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #663bd9;
/* rgb */ color: rgb(102, 59, 217);
/* oklch */ color: oklch(50.3% 0.224 287.9);

Tailwind

colors: {
  custom: {
    50: '#9d75e6',
    500: '#663bd9',
    950: '#000000',
  },
}

SCSS

$custom: #663bd9;
$custom-light: #9d75e6;
$custom-dark: #000000;

JSON

{
  "hex": "#663bd9",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 217
  },
  "hsl": {
    "h": 256.329,
    "s": 67.521,
    "l": 54.118
  },
  "oklch": {
    "l": 0.50341,
    "c": 0.22413,
    "h": 287.9
  },
  "luminance": 0.10962
}

Semantic roles & 50–950 ramp

primary

#663BD9

secondary

#C7DA96

accent

#EA3DBB

background

#FAF7FE

surface

#F4EDFD

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #663BD9

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

Preview Lab → · Contrast checker → · Palette generator →