#631CB3#631CB3
#631CB3 is a dark, highly saturated violet. Relative luminance 0.067; OKLCH L 43.4% C 0.212 H 297.5°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).
Color values
| HEX | #631CB3 |
|---|---|
| RGB | rgb(99, 28, 179) |
| HSL | hsl(268, 73%, 41%) |
| HSV | hsv(268, 84%, 70%) |
| CMYK | cmyk(44.7%, 84.4%, 0%, 29.8%) |
| CIE-LAB | lab(31.20, 58.67, -65.60) |
| CIE-LCH | lch(31.20, 88.01, 311.81°) |
| OKLab | oklab(43.41% 0.098 -0.188) |
| OKLCH | oklch(43.41% 0.212 297.5) |
| XYZ | xyz(13.6954, 6.7376, 43.2180) |
| Luminance | 0.0674 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Violet Blue
#510AC9
ΔE00 4.04
Purple Blue
#5D21D0
ΔE00 4.15
Rebeccapurple
#663399
ΔE00 5.71
Indigo Blue
#3A18B1
ΔE00 5.71
Blue Violet
#5D06E9
ΔE00 6.58
Purple (survey)
#7E1E9C
ΔE00 6.80
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#631CB3 #6CB31C
analogous
#1C20B3 #631CB3 #AE1CB3
triadic
#631CB3 #B3631C #1CB363
tetradic
#631CB3 #B31C20 #6CB31C #1CB3AE
square
#631CB3 #B31C20 #6CB31C #1CB3AE
split-complementary
#631CB3 #B3AE1C #20B31C
monochromatic
#280B49 #46147E #631CB3 #812EDE #A163E7
Accessibility & contrast
On white
8.95
#631CB3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.35
#631CB3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #631CB3
8.95:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##631CB3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##631CB3 | 1.00 | 8.95 | 2.35 | 8.95 |
| #FFFFFF | 8.95 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.35 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.95 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004AB7
Deuteranopia (green-blind)
#0048B0
Tritanopia (blue-blind)
#4D4A6B
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #631cb3; /* rgb */ color: rgb(99, 28, 179); /* oklch */ color: oklch(43.4% 0.212 297.5);
Tailwind
colors: {
custom: {
50: '#9864cb',
500: '#631cb3',
950: '#000000',
},
}SCSS
$custom: #631cb3; $custom-light: #9864cb; $custom-dark: #000000;
JSON
{
"hex": "#631cb3",
"rgb": {
"r": 99,
"g": 28,
"b": 179
},
"hsl": {
"h": 268.212,
"s": 72.947,
"l": 40.588
},
"oklch": {
"l": 0.43413,
"c": 0.21203,
"h": 297.5
},
"luminance": 0.06738
}Semantic roles & 50–950 ramp
primary
#631CB3
secondary
#99CB5F
accent
#F03899
background
#F9F6FC
surface
#F2EBF9
border
#CCC6D2
text
#0F0613
muted
#7E7A82