#664BEF#664BEF
#664BEF is a mid, highly saturated blue. Relative luminance 0.141; OKLCH L 54.4% C 0.233 H 283.0°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).
Color values
| HEX | #664BEF |
|---|---|
| RGB | rgb(102, 75, 239) |
| HSL | hsl(250, 84%, 62%) |
| HSV | hsv(250, 69%, 94%) |
| CMYK | cmyk(57.3%, 68.6%, 0%, 6.3%) |
| CIE-LAB | lab(44.36, 53.97, -78.72) |
| CIE-LCH | lch(44.36, 95.45, 304.43°) |
| OKLab | oklab(54.36% 0.0522 -0.2267) |
| OKLCH | oklch(54.36% 0.233 283) |
| XYZ | xyz(23.5707, 14.0874, 83.1217) |
| Luminance | 0.1409 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Purpleish Blue
#6140EF
ΔE00 2.61
Bluish Purple
#703BE7
ΔE00 3.93
Purpley Blue
#5F34E7
ΔE00 5.38
Light Indigo
#6D5ACF
ΔE00 5.51
Slate Blue
#6A5ACD
ΔE00 5.69
Burple
#6832E3
ΔE00 5.72
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#664BEF #D4EF4B
analogous
#4B82EF #664BEF #B84BEF
triadic
#664BEF #EF664B #4BEF66
tetradic
#664BEF #EF4B82 #D4EF4B #4BEFB8
square
#664BEF #EF4B82 #D4EF4B #4BEFB8
split-complementary
#664BEF #EFB84B #82EF4B
monochromatic
#2A10B0 #3715E8 #664BEF #9683F4 #C6BBF9
Accessibility & contrast
On white
5.50
#664BEF on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.82
#664BEF on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #664BEF
5.50:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##664BEF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##664BEF | 1.00 | 5.50 | 3.82 | 5.50 |
| #FFFFFF | 5.50 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.82 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.50 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#006EF4
Deuteranopia (green-blind)
#0063EC
Tritanopia (blue-blind)
#147697
Achromatopsia (no color)
#696969
Design tokens & code
CSS
--color: #664bef; /* rgb */ color: rgb(102, 75, 239); /* oklch */ color: oklch(54.4% 0.233 283.0);
Tailwind
colors: {
custom: {
50: '#9f80f5',
500: '#664bef',
950: '#000000',
},
}SCSS
$custom: #664bef; $custom-light: #9f80f5; $custom-dark: #000000;
JSON
{
"hex": "#664bef",
"rgb": {
"r": 102,
"g": 75,
"b": 239
},
"hsl": {
"h": 249.878,
"s": 83.673,
"l": 61.569
},
"oklch": {
"l": 0.54364,
"c": 0.2326,
"h": 283
},
"luminance": 0.14089
}Semantic roles & 50–950 ramp
primary
#664BEF
secondary
#DFE9AC
accent
#E005BC
background
#FAF7FF
surface
#F4EEFF
border
#CEC9D7
text
#100A17
muted
#7F7C85