#663DD9#663DD9

#663DD9 is a mid, highly saturated violet. Relative luminance 0.112; OKLCH L 50.6% C 0.222 H 287.7°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#663DD9
RGB	rgb(102, 61, 217)
HSL	hsl(256, 67%, 55%)
HSV	hsv(256, 72%, 85%)
CMYK	cmyk(53%, 71.9%, 0%, 14.9%)
CIE-LAB	lab(39.87, 54.94, -73.58)
CIE-LCH	lch(39.87, 91.83, 306.75°)
OKLab	oklab(50.59% 0.0675 -0.2115)
OKLCH	oklch(50.59% 0.222 287.7)
XYZ	xyz(19.6689, 11.1710, 66.7520)
Luminance	0.1117 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663DD9 #B0D93D

analogous

#3D62D9 #663DD9 #B43DD9

triadic

#663DD9 #D9663D #3DD966

tetradic

#663DD9 #D93D62 #B0D93D #3DD9B4

square

#663DD9 #D93D62 #B0D93D #3DD9B4

split-complementary

#663DD9 #D9B43D #62D93D

monochromatic

#351982 #4A24B5 #663DD9 #8E70E3 #B7A3ED

Accessibility & contrast

On white

6.49

#663DD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#663DD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663DD9

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DD9	#FFFFFF	#000000	##FFFFFF
##663DD9	1.00	6.49	3.23	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061DE

Deuteranopia (green-blind)

#005AD6

Tritanopia (blue-blind)

#386787

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #663dd9;
/* rgb */ color: rgb(102, 61, 217);
/* oklch */ color: oklch(50.6% 0.222 287.7);

Tailwind

colors: {
  custom: {
    50: '#9d76e6',
    500: '#663dd9',
    950: '#000000',
  },
}

SCSS

$custom: #663dd9;
$custom-light: #9d76e6;
$custom-dark: #000000;

JSON

{
  "hex": "#663dd9",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 217
  },
  "hsl": {
    "h": 255.769,
    "s": 67.241,
    "l": 54.51
  },
  "oklch": {
    "l": 0.5059,
    "c": 0.22204,
    "h": 287.7
  },
  "luminance": 0.11172
}

Semantic roles & 50–950 ramp

primary

#663DD9

secondary

#C9DA98

accent

#EA3EBD

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #663DD9

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

Preview Lab → · Contrast checker → · Palette generator →