#663FD9#663FD9

#663FD9 is a mid, highly saturated violet. Relative luminance 0.114; OKLCH L 50.8% C 0.220 H 287.4°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#663FD9
RGB	rgb(102, 63, 217)
HSL	hsl(255, 67%, 55%)
HSV	hsv(255, 71%, 85%)
CMYK	cmyk(53%, 71%, 0%, 14.9%)
CIE-LAB	lab(40.23, 53.93, -72.99)
CIE-LCH	lch(40.23, 90.75, 306.46°)
OKLab	oklab(50.85% 0.0659 -0.2098)
OKLCH	oklch(50.85% 0.22 287.4)
XYZ	xyz(19.7777, 11.3885, 66.7883)
Luminance	0.1139 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FD9 #B2D93F

analogous

#3F65D9 #663FD9 #B33FD9

triadic

#663FD9 #D9663F #3FD966

tetradic

#663FD9 #D93F65 #B2D93F #3FD9B3

square

#663FD9 #D93F65 #B2D93F #3FD9B3

split-complementary

#663FD9 #D9B33F #65D93F

monochromatic

#351A84 #4924B7 #663FD9 #8F72E3 #B7A5ED

Accessibility & contrast

On white

6.41

#663FD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#663FD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FD9

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FD9	#FFFFFF	#000000	##FFFFFF
##663FD9	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062DE

Deuteranopia (green-blind)

#005BD6

Tritanopia (blue-blind)

#386888

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #663fd9;
/* rgb */ color: rgb(102, 63, 217);
/* oklch */ color: oklch(50.8% 0.220 287.4);

Tailwind

colors: {
  custom: {
    50: '#9c77e6',
    500: '#663fd9',
    950: '#000000',
  },
}

SCSS

$custom: #663fd9;
$custom-light: #9c77e6;
$custom-dark: #000000;

JSON

{
  "hex": "#663fd9",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 217
  },
  "hsl": {
    "h": 255.195,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.50845,
    "c": 0.21991,
    "h": 287.4
  },
  "luminance": 0.1139
}

Semantic roles & 50–950 ramp

primary

#663FD9

secondary

#CADA9A

accent

#EA3EBE

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #663FD9

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

Preview Lab → · Contrast checker → · Palette generator →