#663DB3#663DB3

#663DB3 is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.4% C 0.178 H 294.6°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#663DB3
RGB	rgb(102, 61, 179)
HSL	hsl(261, 49%, 47%)
HSV	hsv(261, 66%, 70%)
CMYK	cmyk(43%, 65.9%, 0%, 29.8%)
CIE-LAB	lab(36.77, 44.41, -56.48)
CIE-LCH	lch(36.77, 71.85, 308.18°)
OKLab	oklab(47.42% 0.074 -0.1613)
OKLCH	oklch(47.42% 0.178 294.6)
XYZ	xyz(15.2827, 9.4166, 43.6515)
Luminance	0.0942 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.31

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663DB3 #8AB33D

analogous

#3D4FB3 #663DB3 #A13DB3

triadic

#663DB3 #B3663D #3DB366

tetradic

#663DB3 #B33D4F #8AB33D #3DB3A1

square

#663DB3 #B33D4F #8AB33D #3DB3A1

split-complementary

#663DB3 #B3A13D #4FB33D

monochromatic

#321E58 #4C2D85 #663DB3 #8763CA #AA91D9

Accessibility & contrast

On white

7.28

#663DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#663DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663DB3

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DB3	#FFFFFF	#000000	##FFFFFF
##663DB3	1.00	7.28	2.88	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B7

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#515973

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #663db3;
/* rgb */ color: rgb(102, 61, 179);
/* oklch */ color: oklch(47.4% 0.178 294.6);

Tailwind

colors: {
  custom: {
    50: '#9875cb',
    500: '#663db3',
    950: '#000000',
  },
}

SCSS

$custom: #663db3;
$custom-light: #9875cb;
$custom-dark: #000000;

JSON

{
  "hex": "#663db3",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 179
  },
  "hsl": {
    "h": 260.847,
    "s": 49.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.47422,
    "c": 0.17751,
    "h": 294.6
  },
  "luminance": 0.09417
}

Semantic roles & 50–950 ramp

primary

#663DB3

secondary

#AFC587

accent

#D94FA9

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #663DB3

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

Preview Lab → · Contrast checker → · Palette generator →