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Running Number
13,236,719
HEX
#C9F9EF
RGB
201, 249, 239
HSL
168°,80%,88%
HSV
168°,19%,98%
CMYK
19%,0%,4%,2%
Brightness
92%
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
#C9F9EF sits at 168° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 80% saturation and 88% lightness, it reads as a richly saturated, very light tone — a soft but unmistakably tinted presence. Its RGB mix of 201, 249, 239 produces a 18.28:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #C9F9EF is a clear variant of CSS gainsboro — about 40 units away from #DCDCDC. Designers reach for cyan hues at this saturation when the brief calls for bold, immediate signal, 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 #C9F9EF in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#c9f9ef";💡 Click any tab to see how to use #c9f9ef in different programming languages