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💡 Click on any color value below to copy it to clipboard
Running Number
6,520,033
HEX
#637CE1
RGB
99, 124, 225
HSL
228°,68%,64%
HSV
228°,56%,88%
CMYK
56%,45%,0%,12%
Brightness
50%
Type
Light
AA Normal Text: ≥ 4.5:1
AA Large Text: ≥ 3.0:1
AAA Normal Text: ≥ 7.0:1
AAA Large Text: ≥ 4.5:1
#637CE1 sits at 228° on the color wheel, placing it in the blue family of the cool half of the spectrum. With 68% saturation and 64% lightness, it reads as a richly saturated, light tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 99, 124, 225 produces a 5.50:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.
In RGB space #637CE1 is a clear variant of CSS royal blue — about 39 units away from #4169E1. Designers reach for blue hues at this saturation when the brief calls for a conversational, mid-energy register, and at this lightness when they want a present, comfortable mid-canvas voice. On screen the cool cast tends to pair best with warm neutrals in the 25°-45° range to add life.
See how this color appears in real UI elements
Button (filled)
Badge
Progress Bar
Link Hover
Input Focus Ring
Checkbox Active
Toggle Switch On
Slider Thumb
Card Border
Icon Highlight
Tooltip Background
Modal Header
Tab Active
Alert Box
Timeline Dot
Loading Spinner
Dropdown Selected
Table Row Highlight
Calendar Date
Mobile Device
See how to use #637CE1 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#637ce1";💡 Click any tab to see how to use #637ce1 in different programming languages