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Running Number
5,748,403
HEX
#57B6B3
RGB
87, 182, 179
HSL
178°,39%,53%
HSV
178°,52%,71%
CMYK
52%,0%,2%,29%
Brightness
60%
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
#57B6B3 sits at 178° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 39% saturation and 53% lightness, it reads as a softly muted, balanced tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 87, 182, 179 produces a 8.75:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #57B6B3 is a clear variant of CSS steel blue — about 55 units away from #4682B4. Designers reach for cyan hues at this saturation when the brief calls for a conversational, mid-energy register, 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 #57B6B3 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#57b6b3";💡 Click any tab to see how to use #57b6b3 in different programming languages