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💡 Click on any color value below to copy it to clipboard
Running Number
2,221,105
HEX
#21E431
RGB
33, 228, 49
HSL
125°,78%,51%
HSV
125°,86%,89%
CMYK
86%,0%,79%,11%
Brightness
59%
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
#21E431 sits at 125° on the color wheel, placing it in the green family of the cool half of the spectrum. With 78% saturation and 51% lightness, it reads as a richly saturated, balanced tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 33, 228, 49 produces a 12.21:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #21E431 is a distant relative of CSS lime — about 65 units away from #00FF00. Designers reach for green hues at this saturation when the brief calls for bold, immediate signal, 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 #21E431 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#21e431";💡 Click any tab to see how to use #21e431 in different programming languages