#663DA3#663DA3
#663DA3 is a mid, vivid violet. Relative luminance 0.088; OKLCH L 46.2% C 0.158 H 298.5°. Best body text is #FFFFFF at 7.60:1 contrast (WCAG AA passes).
Color values
| HEX | #663DA3 |
|---|---|
| RGB | rgb(102, 61, 163) |
| HSL | hsl(264, 46%, 44%) |
| HSV | hsv(264, 63%, 64%) |
| CMYK | cmyk(37.4%, 62.6%, 0%, 36.1%) |
| CIE-LAB | lab(35.61, 40.07, -48.83) |
| CIE-LCH | lch(35.61, 63.16, 309.38°) |
| OKLab | oklab(46.21% 0.0755 -0.1388) |
| OKLCH | oklch(46.21% 0.158 298.5) |
| XYZ | xyz(13.7574, 8.8064, 35.6182) |
| Luminance | 0.0881 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Rebeccapurple
#663399
ΔE00 2.91
Ocean Blue
#4F42B5
ΔE00 5.77
Bluey Purple
#6241C7
ΔE00 5.83
Royal Purple
#7851A9
ΔE00 6.41
Blue With A Hint Of Purple
#533CC6
ΔE00 6.53
Darkslateblue
#483D8B
ΔE00 6.77
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#663DA3 #7AA33D
analogous
#3D47A3 #663DA3 #993DA3
triadic
#663DA3 #A3663D #3DA366
tetradic
#663DA3 #A33D47 #7AA33D #3DA399
square
#663DA3 #A33D47 #7AA33D #3DA399
split-complementary
#663DA3 #A3993D #47A33D
monochromatic
#2E1C4A #4A2C76 #663DA3 #855BC2 #A688D2
Accessibility & contrast
On white
7.60
#663DA3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.76
#663DA3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #663DA3
7.60:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##663DA3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##663DA3 | 1.00 | 7.60 | 2.76 | 7.60 |
| #FFFFFF | 7.60 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.76 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.60 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0054A6
Deuteranopia (green-blind)
#1153A1
Tritanopia (blue-blind)
#58536A
Achromatopsia (no color)
#545454
Design tokens & code
CSS
--color: #663da3; /* rgb */ color: rgb(102, 61, 163); /* oklch */ color: oklch(46.2% 0.158 298.5);
Tailwind
colors: {
custom: {
50: '#9675bf',
500: '#663da3',
950: '#000000',
},
}SCSS
$custom: #663da3; $custom-light: #9675bf; $custom-dark: #000000;
JSON
{
"hex": "#663da3",
"rgb": {
"r": 102,
"g": 61,
"b": 163
},
"hsl": {
"h": 264.118,
"s": 45.536,
"l": 43.922
},
"oklch": {
"l": 0.4621,
"c": 0.158,
"h": 298.5
},
"luminance": 0.08807
}Semantic roles & 50–950 ramp
primary
#663DA3
secondary
#A4BD7F
accent
#D553A1
background
#F9F7FB
surface
#F2EDF7
border
#CCC8D0
text
#0E0812
muted
#7E7B81