#663BC4#663BC4
#663BC4 is a mid, highly saturated violet. Relative luminance 0.099; OKLCH L 48.5% C 0.200 H 291.5°. Best body text is #FFFFFF at 7.03:1 contrast (WCAG AA passes).
Color values
| HEX | #663BC4 |
|---|---|
| RGB | rgb(102, 59, 196) |
| HSL | hsl(259, 54%, 50%) |
| HSV | hsv(259, 70%, 77%) |
| CMYK | cmyk(48%, 69.9%, 0%, 23.1%) |
| CIE-LAB | lab(37.73, 50.14, -64.92) |
| CIE-LCH | lch(37.73, 82.03, 307.68°) |
| OKLab | oklab(48.53% 0.0734 -0.1861) |
| OKLCH | oklch(48.53% 0.2 291.5) |
| XYZ | xyz(17.0045, 9.9376, 53.2360) |
| Luminance | 0.0994 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Bluey Purple
#6241C7
ΔE00 1.65
Blurple
#5539CC
ΔE00 2.81
Blue With A Hint Of Purple
#533CC6
ΔE00 2.98
Burple
#6832E3
ΔE00 4.06
Purpley Blue
#5F34E7
ΔE00 4.53
Ocean Blue
#4F42B5
ΔE00 4.70
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#663BC4 #99C43B
analogous
#3B55C4 #663BC4 #AA3BC4
triadic
#663BC4 #C4663B #3BC466
tetradic
#663BC4 #C43B55 #99C43B #3BC4AA
square
#663BC4 #C43B55 #99C43B #3BC4AA
split-complementary
#663BC4 #C4AA3B #55C43B
monochromatic
#351F66 #4E2D95 #663BC4 #8B6AD2 #AF99E0
Accessibility & contrast
On white
7.03
#663BC4 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.99
#663BC4 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #663BC4
7.03:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##663BC4 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##663BC4 | 1.00 | 7.03 | 2.99 | 7.03 |
| #FFFFFF | 7.03 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.03 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#005BC8
Deuteranopia (green-blind)
#0056C1
Tritanopia (blue-blind)
#485E7B
Achromatopsia (no color)
#595959
Design tokens & code
CSS
--color: #663bc4; /* rgb */ color: rgb(102, 59, 196); /* oklch */ color: oklch(48.5% 0.200 291.5);
Tailwind
colors: {
custom: {
50: '#9a74d7',
500: '#663bc4',
950: '#000000',
},
}SCSS
$custom: #663bc4; $custom-light: #9a74d7; $custom-dark: #000000;
JSON
{
"hex": "#663bc4",
"rgb": {
"r": 102,
"g": 59,
"b": 196
},
"hsl": {
"h": 258.832,
"s": 53.725,
"l": 50
},
"oklch": {
"l": 0.48526,
"c": 0.20009,
"h": 291.5
},
"luminance": 0.09938
}Semantic roles & 50–950 ramp
primary
#663BC4
secondary
#B9CC8F
accent
#DD4BAF
background
#FAF7FD
surface
#F3EDFA
border
#CDC8D3
text
#0F0814
muted
#7F7B83