PHYSICALLYBASED

A database of physically based values for CG artists

Gray Card

Manmade

Render BallRender Ball

Shading


Base Color:

Metalness:

IOR:

Misc


Relative Luminance:

Description

In photography and computer graphics, middle gray is a tone that is perceptually about halfway between black and white on a lightness scale. Light meters and cameras are often calibrated using an 18% gray card or a color reference card such as a ColorChecker. It is typically defined as 18% reflectance in visible light.

References

These reference values are based on the most accurate data available at the time and are continually updated as new measurements become available. Depending on the material and the property you're after, there's more or less variability to take into account. Use these values as a starting point, or as validation for existing materials, and then tweak further using your artistic freedom.

Made by Anton Palmqvist with data from https://api.physicallybased.info/v2