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💡 Click on any color value below to copy it to clipboard
Running Number
6,524,300
HEX
#638D8C
RGB
99, 141, 140
HSL
179°,18%,47%
HSV
179°,30%,55%
CMYK
30%,0%,1%,45%
Brightness
50%
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
#638D8C sits at 179° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 18% saturation and 47% lightness, it reads as a heavily muted, balanced tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 99, 141, 140 produces a 5.72:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.
In RGB space #638D8C is a clear variant of CSS gray — about 34 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 #638D8C in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#638d8c";💡 Click any tab to see how to use #638d8c in different programming languages