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Yep, if you use Unity you can see the set-up here: https://itch.io/t/173235/unity-scene-set-up-lighting

for other engine it depends on capabilities and available options.

unfortunately i dont use unity, but gamemaker

when i set the ambiant light to the indicated value, all models gets that color.

Sorry, can't help you. Each engine uses different light settings, rendering options etc. so you'll have to try and match with the settings available to you.