#663EA3#663EA3
#663EA3 is a mid, vivid violet. Relative luminance 0.089; OKLCH L 46.4% C 0.157 H 298.3°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).
Color values
| HEX | #663EA3 |
|---|---|
| RGB | rgb(102, 62, 163) |
| HSL | hsl(264, 45%, 44%) |
| HSV | hsv(264, 62%, 64%) |
| CMYK | cmyk(37.4%, 62%, 0%, 36.1%) |
| CIE-LAB | lab(35.82, 39.51, -48.49) |
| CIE-LCH | lch(35.82, 62.55, 309.18°) |
| OKLab | oklab(46.36% 0.0742 -0.1378) |
| OKLCH | oklch(46.36% 0.157 298.3) |
| XYZ | xyz(13.8113, 8.9142, 35.6362) |
| Luminance | 0.0891 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Rebeccapurple
#663399
ΔE00 3.12
Ocean Blue
#4F42B5
ΔE00 5.71
Bluey Purple
#6241C7
ΔE00 5.80
Royal Purple
#7851A9
ΔE00 6.20
Blue With A Hint Of Purple
#533CC6
ΔE00 6.55
Darkslateblue
#483D8B
ΔE00 6.72
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#663EA3 #7BA33E
analogous
#3E49A3 #663EA3 #993EA3
triadic
#663EA3 #A3663E #3EA366
tetradic
#663EA3 #A33E49 #7BA33E #3EA399
square
#663EA3 #A33E49 #7BA33E #3EA399
split-complementary
#663EA3 #A3993E #49A33E
monochromatic
#2F1C4A #4A2D77 #663EA3 #855DC1 #A689D2
Accessibility & contrast
On white
7.55
#663EA3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.78
#663EA3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #663EA3
7.55:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##663EA3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##663EA3 | 1.00 | 7.55 | 2.78 | 7.55 |
| #FFFFFF | 7.55 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.78 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.55 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0054A6
Deuteranopia (green-blind)
#1453A1
Tritanopia (blue-blind)
#58546A
Achromatopsia (no color)
#545454
Design tokens & code
CSS
--color: #663ea3; /* rgb */ color: rgb(102, 62, 163); /* oklch */ color: oklch(46.4% 0.157 298.3);
Tailwind
colors: {
custom: {
50: '#9675bf',
500: '#663ea3',
950: '#000000',
},
}SCSS
$custom: #663ea3; $custom-light: #9675bf; $custom-dark: #000000;
JSON
{
"hex": "#663ea3",
"rgb": {
"r": 102,
"g": 62,
"b": 163
},
"hsl": {
"h": 263.762,
"s": 44.889,
"l": 44.118
},
"oklch": {
"l": 0.46363,
"c": 0.15655,
"h": 298.3
},
"luminance": 0.08914
}Semantic roles & 50–950 ramp
primary
#663EA3
secondary
#A5BD80
accent
#D553A1
background
#F9F7FB
surface
#F2EDF7
border
#CCC8D0
text
#0E0812
muted
#7E7B81