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💡 Click on any color value below to copy it to clipboard
Running Number
6,519,916
HEX
#637C6C
RGB
99, 124, 108
HSL
142°,11%,44%
HSV
142°,20%,49%
CMYK
20%,0%,13%,51%
Brightness
45%
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
#637C6C sits at 142° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 11% saturation and 44% lightness, it reads as a heavily muted, shadowed tone — a quiet, restrained presence that recedes rather than competes. Its RGB mix of 99, 124, 108 produces a 4.63:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.
In RGB space #637C6C is a close cousin of CSS dim gray — about 20 units away from #696969. Designers reach for spring green 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 #637C6C in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#637c6c";💡 Click any tab to see how to use #637c6c in different programming languages