#663EB3#663EB3

#663EB3 is a mid, vivid violet. Relative luminance 0.095; OKLCH L 47.6% C 0.176 H 294.5°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#663EB3
RGB	rgb(102, 62, 179)
HSL	hsl(261, 49%, 47%)
HSV	hsv(261, 65%, 70%)
CMYK	cmyk(43%, 65.4%, 0%, 29.8%)
CIE-LAB	lab(36.97, 43.87, -56.16)
CIE-LCH	lch(36.97, 71.26, 308.00°)
OKLab	oklab(47.57% 0.0729 -0.1604)
OKLCH	oklch(47.57% 0.176 294.5)
XYZ	xyz(15.3366, 9.5243, 43.6694)
Luminance	0.0953 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.24

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663EB3 #8BB33E

analogous

#3E50B3 #663EB3 #A13EB3

triadic

#663EB3 #B3663E #3EB366

tetradic

#663EB3 #B33E50 #8BB33E #3EB3A1

square

#663EB3 #B33E50 #8BB33E #3EB3A1

split-complementary

#663EB3 #B3A13E #50B33E

monochromatic

#321F58 #4C2E86 #663EB3 #8765CA #AA92D9

Accessibility & contrast

On white

7.23

#663EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#663EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663EB3

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663EB3	#FFFFFF	#000000	##FFFFFF
##663EB3	1.00	7.23	2.91	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B7

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#515973

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #663eb3;
/* rgb */ color: rgb(102, 62, 179);
/* oklch */ color: oklch(47.6% 0.176 294.5);

Tailwind

colors: {
  custom: {
    50: '#9876cb',
    500: '#663eb3',
    950: '#000000',
  },
}

SCSS

$custom: #663eb3;
$custom-light: #9876cb;
$custom-dark: #000000;

JSON

{
  "hex": "#663eb3",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 179
  },
  "hsl": {
    "h": 260.513,
    "s": 48.548,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47567,
    "c": 0.17618,
    "h": 294.5
  },
  "luminance": 0.09525
}

Semantic roles & 50–950 ramp

primary

#663EB3

secondary

#B0C588

accent

#D850A9

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #663EB3

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

Preview Lab → · Contrast checker → · Palette generator →