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Running Number
6,569,611
HEX
#643E8B
RGB
100, 62, 139
HSL
270°,38%,39%
HSV
270°,55%,55%
CMYK
28%,55%,0%,45%
Brightness
32%
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
#643E8B sits at 270° on the color wheel, placing it in the violet family of the cool half of the spectrum. With 38% saturation and 39% lightness, it reads as a softly muted, shadowed tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 100, 62, 139 produces a 8.07:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.
In RGB space #643E8B is a clear variant of CSS dim gray — about 55 units away from #696969. 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 #643E8B in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#643e8b";💡 Click any tab to see how to use #643e8b in different programming languages