#663FD5#663FD5

#663FD5 is a mid, highly saturated violet. Relative luminance 0.112; OKLCH L 50.5% C 0.215 H 288.0°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#663FD5
RGB	rgb(102, 63, 213)
HSL	hsl(256, 64%, 54%)
HSV	hsv(256, 70%, 84%)
CMYK	cmyk(52.1%, 70.4%, 0%, 16.5%)
CIE-LAB	lab(39.89, 52.81, -71.25)
CIE-LCH	lch(39.89, 88.68, 306.55°)
OKLab	oklab(50.5% 0.0667 -0.2047)
OKLCH	oklch(50.5% 0.215 288)
XYZ	xyz(19.2637, 11.1830, 64.0814)
Luminance	0.1118 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FD5 #AED53F

analogous

#3F63D5 #663FD5 #B13FD5

triadic

#663FD5 #D5663F #3FD566

tetradic

#663FD5 #D53F63 #AED53F #3FD5B1

square

#663FD5 #D53F63 #AED53F #3FD5B1

split-complementary

#663FD5 #D5B13F #63D53F

monochromatic

#351C7E #4A27B0 #663FD5 #8E71E0 #B6A3EB

Accessibility & contrast

On white

6.49

#663FD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#663FD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FD5

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FD5	#FFFFFF	#000000	##FFFFFF
##663FD5	1.00	6.49	3.24	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061D9

Deuteranopia (green-blind)

#005AD2

Tritanopia (blue-blind)

#3B6686

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #663fd5;
/* rgb */ color: rgb(102, 63, 213);
/* oklch */ color: oklch(50.5% 0.215 288.0);

Tailwind

colors: {
  custom: {
    50: '#9c77e3',
    500: '#663fd5',
    950: '#000000',
  },
}

SCSS

$custom: #663fd5;
$custom-light: #9c77e3;
$custom-dark: #000000;

JSON

{
  "hex": "#663fd5",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 213
  },
  "hsl": {
    "h": 255.6,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.50499,
    "c": 0.2153,
    "h": 288
  },
  "luminance": 0.11184
}

Semantic roles & 50–950 ramp

primary

#663FD5

secondary

#C7D898

accent

#E741BC

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #663FD5

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

Preview Lab → · Contrast checker → · Palette generator →