#663BB1#663BB1
#663BB1 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 47.0% C 0.178 H 295.5°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).
Color values
| HEX | #663BB1 |
|---|---|
| RGB | rgb(102, 59, 177) |
| HSL | hsl(262, 50%, 46%) |
| HSV | hsv(262, 67%, 69%) |
| CMYK | cmyk(42.4%, 66.7%, 0%, 30.6%) |
| CIE-LAB | lab(36.23, 44.95, -56.18) |
| CIE-LCH | lch(36.23, 71.95, 308.66°) |
| OKLab | oklab(46.98% 0.0764 -0.1605) |
| OKLCH | oklch(46.98% 0.178 295.5) |
| XYZ | xyz(14.9772, 9.1267, 42.5590) |
| Luminance | 0.0913 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Bluey Purple
#6241C7
ΔE00 3.78
Rebeccapurple
#663399
ΔE00 4.37
Blue With A Hint Of Purple
#533CC6
ΔE00 4.54
Ocean Blue
#4F42B5
ΔE00 4.72
Blurple
#5539CC
ΔE00 4.83
Purple Blue
#5D21D0
ΔE00 6.14
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#663BB1 #86B13B
analogous
#3B4BB1 #663BB1 #A13BB1
triadic
#663BB1 #B1663B #3BB166
tetradic
#663BB1 #B13B4B #86B13B #3BB1A1
square
#663BB1 #B13B4B #86B13B #3BB1A1
split-complementary
#663BB1 #B1A13B #4BB13B
monochromatic
#311C55 #4C2C83 #663BB1 #865FCA #A98DD9
Accessibility & contrast
On white
7.43
#663BB1 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.83
#663BB1 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #663BB1
7.43:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##663BB1 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##663BB1 | 1.00 | 7.43 | 2.83 | 7.43 |
| #FFFFFF | 7.43 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.83 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.43 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0056B5
Deuteranopia (green-blind)
#0053AF
Tritanopia (blue-blind)
#525771
Achromatopsia (no color)
#555555
Design tokens & code
CSS
--color: #663bb1; /* rgb */ color: rgb(102, 59, 177); /* oklch */ color: oklch(47.0% 0.178 295.5);
Tailwind
colors: {
custom: {
50: '#9874c9',
500: '#663bb1',
950: '#000000',
},
}SCSS
$custom: #663bb1; $custom-light: #9874c9; $custom-dark: #000000;
JSON
{
"hex": "#663bb1",
"rgb": {
"r": 102,
"g": 59,
"b": 177
},
"hsl": {
"h": 261.864,
"s": 50,
"l": 46.275
},
"oklch": {
"l": 0.46981,
"c": 0.17773,
"h": 295.5
},
"luminance": 0.09127
}Semantic roles & 50–950 ramp
primary
#663BB1
secondary
#ADC484
accent
#DA4EA7
background
#F9F7FC
surface
#F2EDF8
border
#CCC8D1
text
#0E0813
muted
#7E7B82