modo_convert_sRGB_color.py

import lx
import modo

scene = modo.Scene()

# default is nuke-default:sRGB
default8bitColorSpace = scene.sceneItem.channel("def8bitColorspace").get()

# create color mapping service instance
colorMappingService = lx.service.ColorMapping()

# create color mapping from default color space to scene referred color space,
# which is linear sRGB for nuke-default
unknown = colorMappingService.MakeColorMapping(default8bitColorSpace, 1)
default_to_scene_referred = lx.object.ColorMapping(unknown)

# convert color
color = (0.9, 0.1, 0.1)
print(default_to_scene_referred.ToLinear(color, 3))