Symmetrical triangular pattern in dark blue

triangles pattern symmetrical shape size dark blue sleek modern geometry optical illusion abstract geometric design angles symmetry symmetrical pattern repeating recurring shiny contrast grid triangle pattern blue pattern optical art artistic contemporary geometric shapes abstract design intricate patterned triangles blue shades sleek design minimalist neat mosaic angular harmonious repetition digital technological contemporary art geometric symmetry crisp harmonious design rhythmic visual appeal clean lines modern art background futuristic