#663B95#663B95

#663B95 is a dark, vivid violet. Relative luminance 0.081; OKLCH L 44.9% C 0.144 H 303.1°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#663B95
RGB	rgb(102, 59, 149)
HSL	hsl(269, 43%, 41%)
HSV	hsv(269, 60%, 58%)
CMYK	cmyk(31.5%, 60.4%, 0%, 41.6%)
CIE-LAB	lab(34.24, 37.51, -42.56)
CIE-LCH	lch(34.24, 56.73, 311.39°)
OKLab	oklab(44.91% 0.0785 -0.1204)
OKLCH	oklch(44.91% 0.144 303.1)
XYZ	xyz(12.4670, 8.1226, 29.3390)
Luminance	0.0812 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B95 #6A953B

analogous

#3B3D95 #663B95 #933B95

triadic

#663B95 #95663B #3B9566

tetradic

#663B95 #953B3D #6A953B #3B9593

square

#663B95 #953B3D #6A953B #3B9593

split-complementary

#663B95 #95933B #3D953B

monochromatic

#2A183D #482A69 #663B95 #8453BB #A37ECC

Accessibility & contrast

On white

8.00

#663B95 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#663B95 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B95

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B95	#FFFFFF	#000000	##FFFFFF
##663B95	1.00	8.00	2.62	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F5098

Deuteranopia (green-blind)

#245093

Tritanopia (blue-blind)

#5D4D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #663b95;
/* rgb */ color: rgb(102, 59, 149);
/* oklch */ color: oklch(44.9% 0.144 303.1);

Tailwind

colors: {
  custom: {
    50: '#9573b5',
    500: '#663b95',
    950: '#000000',
  },
}

SCSS

$custom: #663b95;
$custom-light: #9573b5;
$custom-dark: #000000;

JSON

{
  "hex": "#663b95",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 149
  },
  "hsl": {
    "h": 268.667,
    "s": 43.269,
    "l": 40.784
  },
  "oklch": {
    "l": 0.44907,
    "c": 0.14373,
    "h": 303.1
  },
  "luminance": 0.08123
}

Semantic roles & 50–950 ramp

primary

#663B95

secondary

#97B676

accent

#D35597

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0811

muted

#7E7B80

Preview Lab

Preview with #663B95

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

Preview Lab → · Contrast checker → · Palette generator →