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Running Number
4,154,143
HEX
#3F631F
RGB
63, 99, 31
HSL
92°,52%,25%
HSV
92°,69%,39%
CMYK
36%,0%,69%,61%
Brightness
32%
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
#3F631F sits at 92° on the color wheel, placing it in the chartreuse family of the neutral half of the spectrum. With 52% saturation and 25% lightness, it reads as a moderately saturated, shadowed tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 63, 99, 31 produces a 6.96:1 contrast ratio against white, which clears WCAG AA for body text in that pairing.
In RGB space #3F631F is a clear variant of CSS forest green — about 49 units away from #228B22. Designers reach for chartreuse hues at this saturation when the brief calls for a conversational, mid-energy register, and at this lightness when they want weight, depth, and grounded contrast. On screen the balanced cast tends to pair best with either warm or cool accents depending on the surrounding palette.
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 #3F631F in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#3f631f";💡 Click any tab to see how to use #3f631f in different programming languages