#638CD7#638CD7
#638CD7 is a light, vivid blue. Relative luminance 0.263; OKLCH L 64.3% C 0.122 H 261.8°. Best body text is #000000 at 6.26:1 contrast (WCAG AA passes).
Color values
| HEX | #638CD7 |
|---|---|
| RGB | rgb(99, 140, 215) |
| HSL | hsl(219, 59%, 62%) |
| HSV | hsv(219, 54%, 84%) |
| CMYK | cmyk(54%, 34.9%, 0%, 15.7%) |
| CIE-LAB | lab(58.33, 7.41, -42.75) |
| CIE-LCH | lch(58.33, 43.38, 279.83°) |
| OKLab | oklab(64.31% -0.0175 -0.1207) |
| OKLCH | oklch(64.31% 0.122 261.8) |
| XYZ | xyz(26.7852, 26.3131, 67.9443) |
| Luminance | 0.2631 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Soft Blue
#6488EA
ΔE00 2.73
Faded Blue
#658CBB
ΔE00 3.32
Cornflowerblue
#6495ED
ΔE00 3.61
Dark Sky Blue
#448EE4
ΔE00 4.65
Dodger Blue
#3E82FC
ΔE00 5.01
Dusty Blue
#5A86AD
ΔE00 6.19
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#638CD7 #D7AE63
analogous
#63C6D7 #638CD7 #7463D7
triadic
#638CD7 #D7638C #8CD763
tetradic
#638CD7 #D763C6 #D7AE63 #63D774
square
#638CD7 #D763C6 #D7AE63 #63D774
split-complementary
#638CD7 #D77463 #C6D763
monochromatic
#274F98 #3468C9 #638CD7 #94B0E3 #C4D4F0
Accessibility & contrast
On white
3.35
#638CD7 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
6.26
#638CD7 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #638CD7
6.26:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##638CD7 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##638CD7 | 1.00 | 3.35 | 6.26 | 6.26 |
| #FFFFFF | 3.35 | 1.00 | 21.00 | 21.00 |
| #000000 | 6.26 | 21.00 | 1.00 | 1.00 |
| ##000000 | 6.26 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6E92DA
Deuteranopia (green-blind)
#6087D5
Tritanopia (blue-blind)
#219CA7
Achromatopsia (no color)
#8C8C8C
Design tokens & code
CSS
--color: #638cd7; /* rgb */ color: rgb(99, 140, 215); /* oklch */ color: oklch(64.3% 0.122 261.8);
Tailwind
colors: {
custom: {
50: '#97ade3',
500: '#638cd7',
950: '#000000',
},
}SCSS
$custom: #638cd7; $custom-light: #97ade3; $custom-dark: #000000;
JSON
{
"hex": "#638cd7",
"rgb": {
"r": 99,
"g": 140,
"b": 215
},
"hsl": {
"h": 218.793,
"s": 59.184,
"l": 61.569
},
"oklch": {
"l": 0.64305,
"c": 0.12198,
"h": 261.8
},
"luminance": 0.26315
}Semantic roles & 50–950 ramp
primary
#638CD7
secondary
#E0D1B5
accent
#8B1FC7
background
#F9FAFD
surface
#F2F4FB
border
#CCCED4
text
#0E1015
muted
#7E7F83