RGBFarbraums

RGBFarbraums are a family of digital color spaces defined by a specific set of red, green, and blue primaries, together with a white point and a transfer function. They describe the gamut that can be represented in a given system and form the basis for color reproduction in devices such as cameras, displays, and software workflows. Because they are device dependent, colors specified in one RGBFarbraum may appear differently on another device unless managed correctly.

A RGBFarbraum is characterized by its primaries, which determine the gamut, the white point, and the transfer function that defines how numerical values map to perceptual brightness. The white point commonly used in many spaces is D65, but other points exist. Transfer functions can be gamma-based (sRGB uses a standard gamma around 2.2 with a small linear segment) or more linear in higher-precision workflows. While some RGBFarbraums are relatively small and suited for on-screen work, others aim for larger gamuts to preserve more color information.

Common examples include sRGB, Adobe RGB (1998), ProPhoto RGB, as well as cinema-oriented spaces such as DCI-P3 and, in broader contexts, Rec.2020. Each space offers trade-offs between display capability, color accuracy, and the amount of color data that can be captured or printed. In color workflows, working spaces are managed with ICC profiles to map between spaces and devices, ensuring consistent colors across cameras, monitors, printers, and software.

Limitations and considerations include device display capabilities, potential clipping of colors outside a target gamut, and the need for proper color management. Linear RGB is often used for color arithmetic, while gamma-encoded RGB is typical for direct viewing and standard workflows.