aseconv can convert Adobe "*.ase" color palette exchange files to GIMP "*.gpl" palette files, emits hex colors as comments to be compatible with Aseprite
acoconv can convert Adobe "*.aco" color palette files to GIMP "*.gpl palette files", emits hex colors as comments to be compatible with Aseprite
RGB, grayscale, CMYK and L*a*b colors are supported, note: L*a*b color conversion to RGB is only ~99% accurate, if anyone knows how to fix this please do open a PR!