#663FC8#663FC8

#663FC8 is a mid, highly saturated violet. Relative luminance 0.105; OKLCH L 49.4% C 0.200 H 290.2°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#663FC8
RGB	rgb(102, 63, 200)
HSL	hsl(257, 55%, 52%)
HSV	hsv(257, 69%, 78%)
CMYK	cmyk(49%, 68.5%, 0%, 21.6%)
CIE-LAB	lab(38.81, 49.16, -65.49)
CIE-LCH	lch(38.81, 81.89, 306.90°)
OKLab	oklab(49.4% 0.069 -0.1878)
OKLCH	oklch(49.4% 0.2 290.2)
XYZ	xyz(17.6793, 10.5492, 55.7371)
Luminance	0.1055 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FC8 #A1C83F

analogous

#3F5DC8 #663FC8 #AB3FC8

triadic

#663FC8 #C8663F #3FC866

tetradic

#663FC8 #C83F5D #A1C83F #3FC8AB

square

#663FC8 #C83F5D #A1C83F #3FC8AB

split-complementary

#663FC8 #C8AB3F #5DC83F

monochromatic

#361F6D #4D2D9D #663FC8 #8C6FD6 #B29EE3

Accessibility & contrast

On white

6.75

#663FC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#663FC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FC8

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FC8	#FFFFFF	#000000	##FFFFFF
##663FC8	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)

#005ECC

Deuteranopia (green-blind)

#0058C5

Tritanopia (blue-blind)

#45627F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663fc8;
/* rgb */ color: rgb(102, 63, 200);
/* oklch */ color: oklch(49.4% 0.200 290.2);

Tailwind

colors: {
  custom: {
    50: '#9a77da',
    500: '#663fc8',
    950: '#000000',
  },
}

SCSS

$custom: #663fc8;
$custom-light: #9a77da;
$custom-dark: #000000;

JSON

{
  "hex": "#663fc8",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 200
  },
  "hsl": {
    "h": 257.08,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.49398,
    "c": 0.20008,
    "h": 290.2
  },
  "luminance": 0.1055
}

Semantic roles & 50–950 ramp

primary

#663FC8

secondary

#BED093

accent

#DF49B4

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663FC8

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

Preview Lab → · Contrast checker → · Palette generator →