#663AD3#663AD3

#663AD3 is a mid, highly saturated violet. Relative luminance 0.106; OKLCH L 49.7% C 0.218 H 289.0°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#663AD3
RGB	rgb(102, 58, 211)
HSL	hsl(257, 63%, 53%)
HSV	hsv(257, 73%, 83%)
CMYK	cmyk(51.7%, 72.5%, 0%, 17.3%)
CIE-LAB	lab(38.82, 54.77, -71.85)
CIE-LCH	lch(38.82, 90.34, 307.32°)
OKLab	oklab(49.69% 0.0712 -0.2064)
OKLCH	oklch(49.69% 0.218 289)
XYZ	xyz(18.7470, 10.5532, 62.6645)
Luminance	0.1055 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 3.33

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663AD3 #A7D33A

analogous

#3A5AD3 #663AD3 #B23AD3

triadic

#663AD3 #D3663A #3AD366

tetradic

#663AD3 #D33A5A #A7D33A #3AD3B2

square

#663AD3 #D33A5A #A7D33A #3AD3B2

split-complementary

#663AD3 #D3B23A #5AD33A

monochromatic

#361B78 #4C26AA #663AD3 #8D6CDE #B49EE9

Accessibility & contrast

On white

6.75

#663AD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#663AD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663AD3

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663AD3	#FFFFFF	#000000	##FFFFFF
##663AD3	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED7

Deuteranopia (green-blind)

#0058D0

Tritanopia (blue-blind)

#3D6383

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663ad3;
/* rgb */ color: rgb(102, 58, 211);
/* oklch */ color: oklch(49.7% 0.218 289.0);

Tailwind

colors: {
  custom: {
    50: '#9c74e2',
    500: '#663ad3',
    950: '#000000',
  },
}

SCSS

$custom: #663ad3;
$custom-light: #9c74e2;
$custom-dark: #000000;

JSON

{
  "hex": "#663ad3",
  "rgb": {
    "r": 102,
    "g": 58,
    "b": 211
  },
  "hsl": {
    "h": 257.255,
    "s": 63.485,
    "l": 52.745
  },
  "oklch": {
    "l": 0.49688,
    "c": 0.21839,
    "h": 289
  },
  "luminance": 0.10554
}

Semantic roles & 50–950 ramp

primary

#663AD3

secondary

#C2D693

accent

#E741B7

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0815

muted

#7F7B84

Preview Lab

Preview with #663AD3

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

Preview Lab → · Contrast checker → · Palette generator →