Judge 12 swatches, then see your line next to the crowd's: 208 colour names from a survey of 222,500 sessions put it at 161 degrees of hue.
Go with your first reaction. No feedback until the end, so earlier answers do not bias later ones.
Every dot is a colour that the survey named with a final word of "green" (above the bar) or "blue" (below), painted in its own colour. Tap a dot for its name. Switch the lightness band to see the line move.
Dial in any colour. The six closest survey names (by CIELAB distance) show how people would label it.
Data: xkcd.com/color/rgb.txt (primary, public domain CC0 per its header), 949 colour names with the RGB value where people chose that name most often. Survey figures (222,500 user sessions, over five million colours named, 2010) come from Randall Munroe's post Color Survey Results, 3 May 2010, which lists 954 colours; the text file has 949.
Method: I take names whose last word is "green" or "blue" and whose hue is between 90 and 240 degrees (HSL, computed here from the hex values). The boundary is the hue that misplaces the fewest names, placed in the middle of the equally good range. Your line is found the same way from your 12 answers. "Blue green" ends in "green", so it counts as green. Names are counted once each, so this is a map of names, not of individual votes.
Caveats: respondents saw colours on their own monitors in 2010 and were self-selected web readers. The swatches in the game are hsl(h, 72%, 46%), which matches the mid-tone band, not every shade. The dark and light bands hold fewer names, so their lines are less certain.