#663FBB#663FBB

#663FBB is a mid, vivid violet. Relative luminance 0.100; OKLCH L 48.3% C 0.185 H 292.6°. Best body text is #FFFFFF at 7.01:1 contrast (WCAG AA passes).

Color values

HEX	#663FBB
RGB	rgb(102, 63, 187)
HSL	hsl(259, 50%, 49%)
HSV	hsv(259, 66%, 73%)
CMYK	cmyk(45.5%, 66.3%, 0%, 26.7%)
CIE-LAB	lab(37.78, 45.54, -59.56)
CIE-LCH	lch(37.78, 74.97, 307.40°)
OKLab	oklab(48.34% 0.0709 -0.1704)
OKLCH	oklch(48.34% 0.185 292.6)
XYZ	xyz(16.2242, 9.9671, 48.0731)
Luminance	0.0997 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.02

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FBB #94BB3F

analogous

#3F56BB #663FBB #A43FBB

triadic

#663FBB #BB663F #3FBB66

tetradic

#663FBB #BB3F56 #94BB3F #3FBBA4

square

#663FBB #BB3F56 #94BB3F #3FBBA4

split-complementary

#663FBB #BBA43F #56BB3F

monochromatic

#34205F #4D308D #663FBB #896ACD #AE98DC

Accessibility & contrast

On white

7.01

#663FBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#663FBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663FBB

7.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FBB	#FFFFFF	#000000	##FFFFFF
##663FBB	1.00	7.01	2.99	7.01
#FFFFFF	7.01	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBF

Deuteranopia (green-blind)

#0057B8

Tritanopia (blue-blind)

#4D5D77

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #663fbb;
/* rgb */ color: rgb(102, 63, 187);
/* oklch */ color: oklch(48.3% 0.185 292.6);

Tailwind

colors: {
  custom: {
    50: '#9876d0',
    500: '#663fbb',
    950: '#000000',
  },
}

SCSS

$custom: #663fbb;
$custom-light: #9876d0;
$custom-dark: #000000;

JSON

{
  "hex": "#663fbb",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 187
  },
  "hsl": {
    "h": 258.871,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.48341,
    "c": 0.18457,
    "h": 292.6
  },
  "luminance": 0.09968
}

Semantic roles & 50–950 ramp

primary

#663FBB

secondary

#B6C88E

accent

#D94FAE

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0914

muted

#7E7B82

Preview Lab

Preview with #663FBB

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

Preview Lab → · Contrast checker → · Palette generator →