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Running Number
10,078,686
HEX
#99C9DE
RGB
153, 201, 222
HSL
198°,51%,74%
HSV
198°,31%,87%
CMYK
31%,9%,0%,13%
Brightness
74%
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
#99C9DE sits at 198° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 51% saturation and 74% lightness, it reads as a moderately saturated, light tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 153, 201, 222 produces a 11.76:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #99C9DE is a close cousin of CSS sky blue — about 23 units away from #87CEEB. Designers reach for azure hues at this saturation when the brief calls for a conversational, mid-energy register, and at this lightness when they want lift, air, and gentle emphasis. 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 #99C9DE in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#99c9de";💡 Click any tab to see how to use #99c9de in different programming languages