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💡 Click on any color value below to copy it to clipboard
Running Number
4,376,056
HEX
#42C5F8
RGB
66, 197, 248
HSL
197°,93%,62%
HSV
197°,73%,97%
CMYK
73%,21%,0%,3%
Brightness
64%
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
#42C5F8 sits at 197° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 93% saturation and 62% lightness, it reads as a fully saturated, light tone — an immediate, signal-grade voice that demands attention. Its RGB mix of 66, 197, 248 produces a 10.57:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #42C5F8 is a clear variant of CSS turquoise — about 48 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 #42C5F8 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#42c5f8";💡 Click any tab to see how to use #42c5f8 in different programming languages