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Running Number
9,550,817
HEX
#91BBE1
RGB
145, 187, 225
HSL
209°,57%,73%
HSV
209°,36%,88%
CMYK
36%,17%,0%,12%
Brightness
70%
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
#91BBE1 sits at 209° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 57% saturation and 73% 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 145, 187, 225 produces a 10.40:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #91BBE1 is a close cousin of CSS sky blue — about 24 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 #91BBE1 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#91bbe1";💡 Click any tab to see how to use #91bbe1 in different programming languages