#663FD4#663FD4

#663FD4 is a mid, highly saturated violet. Relative luminance 0.111; OKLCH L 50.4% C 0.214 H 288.2°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#663FD4
RGB	rgb(102, 63, 212)
HSL	hsl(256, 63%, 54%)
HSV	hsv(256, 70%, 83%)
CMYK	cmyk(51.9%, 70.3%, 0%, 16.9%)
CIE-LAB	lab(39.80, 52.53, -70.81)
CIE-LCH	lch(39.80, 88.17, 306.57°)
OKLab	oklab(50.41% 0.0669 -0.2034)
OKLCH	oklch(50.41% 0.214 288.2)
XYZ	xyz(19.1372, 11.1323, 63.4150)
Luminance	0.1113 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FD4 #ADD43F

analogous

#3F63D4 #663FD4 #B13FD4

triadic

#663FD4 #D4663F #3FD466

tetradic

#663FD4 #D43F63 #ADD43F #3FD4B1

square

#663FD4 #D43F63 #ADD43F #3FD4B1

split-complementary

#663FD4 #D4B13F #63D43F

monochromatic

#351C7D #4B27AF #663FD4 #8E71DF #B6A3EA

Accessibility & contrast

On white

6.51

#663FD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#663FD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FD4

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FD4	#FFFFFF	#000000	##FFFFFF
##663FD4	1.00	6.51	3.23	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061D8

Deuteranopia (green-blind)

#005AD1

Tritanopia (blue-blind)

#3C6685

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #663fd4;
/* rgb */ color: rgb(102, 63, 212);
/* oklch */ color: oklch(50.4% 0.214 288.2);

Tailwind

colors: {
  custom: {
    50: '#9c77e2',
    500: '#663fd4',
    950: '#000000',
  },
}

SCSS

$custom: #663fd4;
$custom-light: #9c77e2;
$custom-dark: #000000;

JSON

{
  "hex": "#663fd4",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 212
  },
  "hsl": {
    "h": 255.705,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.50413,
    "c": 0.21413,
    "h": 288.2
  },
  "luminance": 0.11133
}

Semantic roles & 50–950 ramp

primary

#663FD4

secondary

#C7D798

accent

#E641BB

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #663FD4

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

Preview Lab → · Contrast checker → · Palette generator →