#638BFC#638BFC
#638BFC is a light, vivid blue. Relative luminance 0.281; OKLCH L 66.2% C 0.173 H 267.0°. Best body text is #000000 at 6.63:1 contrast (WCAG AA passes).
Color values
| HEX | #638BFC |
|---|---|
| RGB | rgb(99, 139, 252) |
| HSL | hsl(224, 96%, 69%) |
| HSV | hsv(224, 61%, 99%) |
| CMYK | cmyk(60.7%, 44.8%, 0%, 1.2%) |
| CIE-LAB | lab(60.02, 19.96, -60.60) |
| CIE-LCH | lch(60.02, 63.80, 288.24°) |
| OKLab | oklab(66.24% -0.0091 -0.173) |
| OKLCH | oklch(66.24% 0.173 267) |
| XYZ | xyz(31.9429, 28.1434, 95.8255) |
| Luminance | 0.2815 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Soft Blue
#6488EA
ΔE00 2.19
Cornflowerblue
#6495ED
ΔE00 3.85
Dodger Blue
#3E82FC
ΔE00 4.43
Lightish Blue
#3D7AFD
ΔE00 5.90
Cornflower
#6A79F7
ΔE00 6.39
Faded Blue
#658CBB
ΔE00 6.62
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#638BFC #FCD463
analogous
#63D7FC #638BFC #8863FC
triadic
#638BFC #FC638B #8BFC63
tetradic
#638BFC #FC63D7 #FCD463 #63FC88
square
#638BFC #FC63D7 #FCD463 #63FC88
split-complementary
#638BFC #FC8863 #D7FC63
monochromatic
#043EE0 #275EFB #638BFC #9FB8FD #DBE4FE
Accessibility & contrast
On white
3.17
#638BFC on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
6.63
#638BFC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #638BFC
6.63:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##638BFC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##638BFC | 1.00 | 3.17 | 6.63 | 6.63 |
| #FFFFFF | 3.17 | 1.00 | 21.00 | 21.00 |
| #000000 | 6.63 | 21.00 | 1.00 | 1.00 |
| ##000000 | 6.63 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5598FF
Deuteranopia (green-blind)
#3D8AFA
Tritanopia (blue-blind)
#00A5B7
Achromatopsia (no color)
#919191
Design tokens & code
CSS
--color: #638bfc; /* rgb */ color: rgb(99, 139, 252); /* oklch */ color: oklch(66.2% 0.173 267.0);
Tailwind
colors: {
custom: {
50: '#9cacfe',
500: '#638bfc',
950: '#000000',
},
}SCSS
$custom: #638bfc; $custom-light: #9cacfe; $custom-dark: #000000;
JSON
{
"hex": "#638bfc",
"rgb": {
"r": 99,
"g": 139,
"b": 252
},
"hsl": {
"h": 224.314,
"s": 96.226,
"l": 68.824
},
"oklch": {
"l": 0.66239,
"c": 0.17324,
"h": 267
},
"luminance": 0.28146
}Semantic roles & 50–950 ramp
primary
#638BFC
secondary
#F4E8C7
accent
#AA00E6
background
#FAFAFF
surface
#F4F4FF
border
#CECED7
text
#0F1018
muted
#7F7F86