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💡 Click on any color value below to copy it to clipboard
Running Number
6,700,456
HEX
#663DA8
RGB
102, 61, 168
HSL
263°,47%,45%
HSV
263°,64%,66%
CMYK
39%,64%,0%,34%
Brightness
34%
Type
Dark
AA Normal Text: ≥ 4.5:1
AA Large Text: ≥ 3.0:1
AAA Normal Text: ≥ 7.0:1
AAA Large Text: ≥ 4.5:1
#663DA8 sits at 263° on the color wheel, placing it in the violet family of the cool half of the spectrum. With 47% saturation and 45% lightness, it reads as a moderately saturated, balanced tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 102, 61, 168 produces a 7.51:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.
In RGB space #663DA8 is a clear variant of CSS slate blue — about 47 units away from #6A5ACD. Designers reach for violet 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 #663DA8 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#663da8";💡 Click any tab to see how to use #663da8 in different programming languages