Backgrounds and textures - paint - painting - abstract - wallpaper - beige - neutral colors
For those who seek the secret knowledge, here are some stats
PHOTO TAKEN WITH:
MODEL: Canon EOS 5D Mark IV
APERTURE: f/6.3
LENS: 70 mm
EXPOSURE: 1/250 s
ISO: 100
Original size: 4230 x 6345 px