#637CF2#637CF2
#637CF2 is a light, vivid blue. Relative luminance 0.235; OKLCH L 62.7% C 0.178 H 271.4°. Best body text is #000000 at 5.70:1 contrast (WCAG AA passes).
Color values
| HEX | #637CF2 |
|---|---|
| RGB | rgb(99, 124, 242) |
| HSL | hsl(230, 85%, 67%) |
| HSV | hsv(230, 59%, 95%) |
| CMYK | cmyk(59.1%, 48.8%, 0%, 5.1%) |
| CIE-LAB | lab(55.56, 25.72, -62.23) |
| CIE-LCH | lch(55.56, 67.33, 292.46°) |
| OKLab | oklab(62.65% 0.0044 -0.178) |
| OKLCH | oklch(62.65% 0.178 271.4) |
| XYZ | xyz(28.3749, 23.4765, 87.0233) |
| Luminance | 0.2348 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower
#6A79F7
ΔE00 1.91
Soft Blue
#6488EA
ΔE00 4.20
Lightish Blue
#3D7AFD
ΔE00 4.28
Dodger Blue
#3E82FC
ΔE00 5.52
Cornflower Blue
#5170D7
ΔE00 5.87
Clear Blue
#247AFD
ΔE00 6.05
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#637CF2 #F2D963
analogous
#63C4F2 #637CF2 #9163F2
triadic
#637CF2 #F2637C #7CF263
tetradic
#637CF2 #F263C4 #F2D963 #63F291
square
#637CF2 #F263C4 #F2D963 #63F291
split-complementary
#637CF2 #F29163 #C4F263
monochromatic
#1131CA #2B4DED #637CF2 #9BABF7 #D4DBFB
Accessibility & contrast
On white
3.69
#637CF2 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.70
#637CF2 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #637CF2
5.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##637CF2 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##637CF2 | 1.00 | 3.69 | 5.70 | 5.70 |
| #FFFFFF | 3.69 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.70 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.70 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3F8CF6
Deuteranopia (green-blind)
#237FF0
Tritanopia (blue-blind)
#0097AB
Achromatopsia (no color)
#858585
Design tokens & code
CSS
--color: #637cf2; /* rgb */ color: rgb(99, 124, 242); /* oklch */ color: oklch(62.7% 0.178 271.4);
Tailwind
colors: {
custom: {
50: '#9ba1f7',
500: '#637cf2',
950: '#000000',
},
}SCSS
$custom: #637cf2; $custom-light: #9ba1f7; $custom-dark: #000000;
JSON
{
"hex": "#637cf2",
"rgb": {
"r": 99,
"g": 124,
"b": 242
},
"hsl": {
"h": 229.51,
"s": 84.615,
"l": 66.863
},
"oklch": {
"l": 0.62653,
"c": 0.17802,
"h": 271.4
},
"luminance": 0.23479
}Semantic roles & 50–950 ramp
primary
#637CF2
secondary
#EFE7C2
accent
#BB04E1
background
#FAF9FF
surface
#F4F2FF
border
#CECCD7
text
#0F0E17
muted
#7F7E85