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Running Number
8,489,883
HEX
#818B9B
RGB
129, 139, 155
HSL
217°,12%,56%
HSV
217°,17%,61%
CMYK
17%,10%,0%,39%
Brightness
54%
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
#818B9B sits at 217° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 12% saturation and 56% lightness, it reads as a heavily muted, light tone — a quiet, restrained presence that recedes rather than competes. Its RGB mix of 129, 139, 155 produces a 6.10:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.
In RGB space #818B9B is a clear variant of CSS gray — about 29 units away from #808080. Designers reach for azure hues at this saturation when the brief calls for restraint and atmosphere, 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 #818B9B in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#818b9b";💡 Click any tab to see how to use #818b9b in different programming languages