Radioactive Green #2CFA1F
Radioactive Green is a light, vivid green with hex code #2CFA1F and RGB rgb(44, 250, 31).
Aa
Black text reads best on this color (14.80:1).
About this color
#2CFA1F is a light, vivid green. In OKLCH its lightness is 86%, its chroma 0.282 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. It is the named color Radioactive Green. Black text reads best on it, at 14.80:1.
| Hue family | Greens |
| Lightness | light (86%) |
| Chroma | vivid (0.282) |
| Temperature | in between |
| Nearest name | Radioactive Green |
| Black text | 14.80:1 |
| White text | 1.41:1 |
Colors that go with Radioactive Green
Matches found by rotating Radioactive Green around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Radioactive Green
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Radioactive Green, closest first.
Similar named colors
The eight named colors closest to Radioactive Green, with their ΔE distance.
- Electric Green #21FC0D ΔE 0.008
- Highlighter Green #1BFC06 ΔE 0.009
- Poison Green #40FD14 ΔE 0.012
- Hot Green #25FF29 ΔE 0.013
- Neon Green #0CFF0C ΔE 0.015
- Fluorescent Green #08FF08 ΔE 0.016
- Bright Green #01FF07 ΔE 0.016
- Fluro Green #0AFF02 ΔE 0.016
More about Radioactive Green
How to make Radioactive Green
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 2 parts yellow
- 2 parts white
- 1 part green
Recipe result: #B8DC53, a difference of ΔE 0.137 from Radioactive Green. Radioactive Green is more vivid than these paints can mix, so start from a ready-made green paint and adjust it.
Codes for Radioactive Green in every format
| HEX | #2CFA1F |
| RGB | rgb(44, 250, 31) |
| HSL | hsl(116, 96%, 55%) |
| OKLCH | oklch(85.7% 0.282 142.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2CFA1F | 1.41:1 | Fails | Lc -22.1 | Dividers and decoration only |
| Black text on #2CFA1F | 14.80:1 | AAA | Lc 84.3 | Fine for body text |
| #2CFA1F text on white | 1.41:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #2CFA1F text on black | 14.80:1 | AAA | Lc -84.1 | Fine for body text |
Shades and tints of Radioactive Green
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 200.
-
Step 50
50
#E4FEE1
oklch(97% 0.047 142.3)
-
Step 100
100
#C2FCBC
oklch(93.6% 0.104 142.3)
-
Step 200
200 (this color)
#2CFA1F
oklch(85.7% 0.282 142.2)
-
Step 300
300
#14E900
oklch(81% 0.274 142.2)
-
Step 400
400
#0FC200
oklch(70.6% 0.239 142.2)
-
Step 500
500
#0BA700
oklch(63.2% 0.214 142.2)
-
Step 600
600
#088C00
oklch(55.5% 0.188 142.2)
-
Step 700
700
#057600
oklch(49.1% 0.166 142.2)
-
Step 800
800
#036100
oklch(42.7% 0.145 142.3)
-
Step 900
900
#025100
oklch(37.7% 0.128 142.3)
-
Step 950
950
#013100
oklch(27.2% 0.092 142.2)
Radioactive Green with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #FFE100 | 0.198 |
| Deuteranopia (no green cones) | #EBD342 | 0.197 |
| Tritanopia (no blue cones) | #00F2D5 | 0.184 |
| Achromatopsia (no color) | #D8D8D8 | 0.283 |
Use Radioactive Green in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.