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 familyGreens
Lightnesslight (86%)
Chromavivid (0.282)
Temperaturein between
Nearest nameRadioactive Green
Black text14.80:1
White text1.41:1

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.

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.

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.

What colors make green? | Color mixing chart

Codes for Radioactive Green in every format

HEX#2CFA1F
RGBrgb(44, 250, 31)
HSLhsl(116, 96%, 55%)
OKLCHoklch(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.

PairWCAG 2ResultAPCAAPCA 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.

  1. Step 50

    50

    #E4FEE1

    oklch(97% 0.047 142.3)

  2. Step 100

    100

    #C2FCBC

    oklch(93.6% 0.104 142.3)

  3. Step 200

    200 (this color)

    #2CFA1F

    oklch(85.7% 0.282 142.2)

  4. Step 300

    300

    #14E900

    oklch(81% 0.274 142.2)

  5. Step 400

    400

    #0FC200

    oklch(70.6% 0.239 142.2)

  6. Step 500

    500

    #0BA700

    oklch(63.2% 0.214 142.2)

  7. Step 600

    600

    #088C00

    oklch(55.5% 0.188 142.2)

  8. Step 700

    700

    #057600

    oklch(49.1% 0.166 142.2)

  9. Step 800

    800

    #036100

    oklch(42.7% 0.145 142.3)

  10. Step 900

    900

    #025100

    oklch(37.7% 0.128 142.3)

  11. Step 950

    950

    #013100

    oklch(27.2% 0.092 142.2)

Export this scale for Tailwind in the Tailwind colors tool

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.

VisionSeen asShift (ΔE)
Protanopia (no red cones)#FFE1000.198
Deuteranopia (no green cones)#EBD3420.197
Tritanopia (no blue cones)#00F2D50.184
Achromatopsia (no color)#D8D8D80.283

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.