#663188#663188

#663188 is a dark, vivid violet. Relative luminance 0.068; OKLCH L 42.5% C 0.144 H 309.7°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#663188
RGB	rgb(102, 49, 136)
HSL	hsl(277, 47%, 36%)
HSV	hsv(277, 64%, 53%)
CMYK	cmyk(25%, 64%, 0%, 46.7%)
CIE-LAB	lab(31.35, 39.74, -39.22)
CIE-LCH	lch(31.35, 55.83, 315.38°)
OKLab	oklab(42.53% 0.0918 -0.1106)
OKLCH	oklch(42.53% 0.144 309.7)
XYZ	xyz(11.0209, 6.7992, 24.0196)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663188 #538831

analogous

#3B3188 #663188 #88317F

triadic

#663188 #886631 #318866

tetradic

#663188 #883B31 #538831 #317F88

square

#663188 #883B31 #538831 #317F88

split-complementary

#663188 #7F8831 #31883B

monochromatic

#23112E #44215B #663188 #8841B5 #A46AC9

Accessibility & contrast

On white

8.90

#663188 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#663188 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663188

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663188	#FFFFFF	#000000	##FFFFFF
##663188	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07478B

Deuteranopia (green-blind)

#264B86

Tritanopia (blue-blind)

#614258

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #663188;
/* rgb */ color: rgb(102, 49, 136);
/* oklch */ color: oklch(42.5% 0.144 309.7);

Tailwind

colors: {
  custom: {
    50: '#956cab',
    500: '#663188',
    950: '#000000',
  },
}

SCSS

$custom: #663188;
$custom-light: #956cab;
$custom-dark: #000000;

JSON

{
  "hex": "#663188",
  "rgb": {
    "r": 102,
    "g": 49,
    "b": 136
  },
  "hsl": {
    "h": 276.552,
    "s": 47.027,
    "l": 36.275
  },
  "oklch": {
    "l": 0.42528,
    "c": 0.14368,
    "h": 309.7
  },
  "luminance": 0.06799
}

Semantic roles & 50–950 ramp

primary

#663188

secondary

#82B164

accent

#D75185

background

#F9F6FA

surface

#F2ECF4

border

#CCC7CE

text

#0D0710

muted

#7E7A7F

Preview Lab

Preview with #663188

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

Preview Lab → · Contrast checker → · Palette generator →