#637EEC#637EEC
#637EEC is a light, vivid blue. Relative luminance 0.236; OKLCH L 62.7% C 0.167 H 270.6°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).
Color values
| HEX | #637EEC |
|---|---|
| RGB | rgb(99, 126, 236) |
| HSL | hsl(228, 78%, 66%) |
| HSV | hsv(228, 58%, 93%) |
| CMYK | cmyk(58.1%, 46.6%, 0%, 7.5%) |
| CIE-LAB | lab(55.71, 22.56, -58.64) |
| CIE-LCH | lch(55.71, 62.83, 291.04°) |
| OKLab | oklab(62.65% 0.0016 -0.1674) |
| OKLCH | oklch(62.65% 0.167 270.6) |
| XYZ | xyz(27.7417, 23.6283, 82.4394) |
| Luminance | 0.2363 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower
#6A79F7
ΔE00 2.82
Soft Blue
#6488EA
ΔE00 3.40
Lightish Blue
#3D7AFD
ΔE00 4.27
Dodger Blue
#3E82FC
ΔE00 5.12
Cornflower Blue
#5170D7
ΔE00 5.83
Clear Blue
#247AFD
ΔE00 5.88
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#637EEC #ECD163
analogous
#63C3EC #637EEC #8C63EC
triadic
#637EEC #EC637E #7EEC63
tetradic
#637EEC #EC63C3 #ECD163 #63EC8C
square
#637EEC #EC63C3 #ECD163 #63EC8C
split-complementary
#637EEC #EC8C63 #C3EC63
monochromatic
#1738BE #2C51E5 #637EEC #9AABF3 #D0D8F9
Accessibility & contrast
On white
3.67
#637EEC on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.73
#637EEC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #637EEC
5.73:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##637EEC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##637EEC | 1.00 | 3.67 | 5.73 | 5.73 |
| #FFFFFF | 3.67 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.73 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.73 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#498CF0
Deuteranopia (green-blind)
#3480EA
Tritanopia (blue-blind)
#0097AA
Achromatopsia (no color)
#858585
Design tokens & code
CSS
--color: #637eec; /* rgb */ color: rgb(99, 126, 236); /* oklch */ color: oklch(62.7% 0.167 270.6);
Tailwind
colors: {
custom: {
50: '#9aa3f3',
500: '#637eec',
950: '#000000',
},
}SCSS
$custom: #637eec; $custom-light: #9aa3f3; $custom-dark: #000000;
JSON
{
"hex": "#637eec",
"rgb": {
"r": 99,
"g": 126,
"b": 236
},
"hsl": {
"h": 228.175,
"s": 78.286,
"l": 65.686
},
"oklch": {
"l": 0.62654,
"c": 0.16742,
"h": 270.6
},
"luminance": 0.2363
}Semantic roles & 50–950 ramp
primary
#637EEC
secondary
#ECE3BF
accent
#B20BDB
background
#FAF9FE
surface
#F3F2FD
border
#CDCCD5
text
#0F0F17
muted
#7F7E85