#663B82#663B82

#663B82 is a dark, vivid violet. Relative luminance 0.076; OKLCH L 43.7% C 0.120 H 310.3°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#663B82
RGB	rgb(102, 59, 130)
HSL	hsl(276, 38%, 37%)
HSV	hsv(276, 55%, 51%)
CMYK	cmyk(21.5%, 54.6%, 0%, 49%)
CIE-LAB	lab(33.06, 32.73, -32.76)
CIE-LCH	lch(33.06, 46.31, 314.97°)
OKLab	oklab(43.66% 0.0778 -0.0917)
OKLCH	oklch(43.66% 0.12 310.3)
XYZ	xyz(11.0720, 7.5646, 21.9916)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B82 #57823B

analogous

#433B82 #663B82 #823B7B

triadic

#663B82 #82663B #3B8266

tetradic

#663B82 #82433B #57823B #3B7B82

square

#663B82 #82433B #57823B #3B7B82

split-complementary

#663B82 #7B823B #3B8243

monochromatic

#24152E #452858 #663B82 #874EAC #A476C1

Accessibility & contrast

On white

8.36

#663B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#663B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B82

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B82	#FFFFFF	#000000	##FFFFFF
##663B82	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274C84

Deuteranopia (green-blind)

#354F80

Tritanopia (blue-blind)

#634758

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #663b82;
/* rgb */ color: rgb(102, 59, 130);
/* oklch */ color: oklch(43.7% 0.120 310.3);

Tailwind

colors: {
  custom: {
    50: '#9473a7',
    500: '#663b82',
    950: '#000000',
  },
}

SCSS

$custom: #663b82;
$custom-light: #9473a7;
$custom-dark: #000000;

JSON

{
  "hex": "#663b82",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 130
  },
  "hsl": {
    "h": 276.338,
    "s": 37.566,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43663,
    "c": 0.12027,
    "h": 310.3
  },
  "luminance": 0.07564
}

Semantic roles & 50–950 ramp

primary

#663B82

secondary

#86AB6E

accent

#CE5A88

background

#F9F7FA

surface

#F2EDF4

border

#CCC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #663B82

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

Preview Lab → · Contrast checker → · Palette generator →