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Running Number
5,932,939
HEX
#5A878B
RGB
90, 135, 139
HSL
185°,21%,45%
HSV
185°,35%,55%
CMYK
35%,3%,0%,45%
Brightness
48%
Type
Dark
AA Normal Text: ≥ 4.5:1
AA Large Text: ≥ 3.0:1
AAA Normal Text: ≥ 7.0:1
AAA Large Text: ≥ 4.5:1
#5A878B sits at 185° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 21% saturation and 45% 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 90, 135, 139 produces a 5.27:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.
In RGB space #5A878B is a clear variant of CSS gray — about 40 units away from #808080. Designers reach for cyan hues at this saturation when the brief calls for restraint and atmosphere, 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 #5A878B in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#5a878b";💡 Click any tab to see how to use #5a878b in different programming languages