The largest polygons in this tessellation are the elongated octagons. There are also equilateral triangles, isosceles triangles, kites of two sizes, and tiny regular hexagons.
I recently found this “lost artwork” I made in 2010, two years before starting this blog. Traditionally, “op art” is black and white, only — but “traditionally” is a word seldom applied to anything I do, and I see no reason to change that now.