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Running Number
2,209,512
HEX
#21B6E8
RGB
33, 182, 232
HSL
195°,81%,52%
HSV
195°,86%,91%
CMYK
86%,22%,0%,9%
Brightness
56%
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
#21B6E8 sits at 195° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 81% saturation and 52% lightness, it reads as a richly saturated, balanced tone — an immediate, signal-grade voice that demands attention. Its RGB mix of 33, 182, 232 produces a 8.92:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #21B6E8 is a clear variant of CSS turquoise — about 57 units away from #40E0D0. Designers reach for azure hues at this saturation when the brief calls for bold, immediate signal, 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 #21B6E8 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#21b6e8";💡 Click any tab to see how to use #21b6e8 in different programming languages