D655

The D655 refers to a specific color standard used in color science and digital imaging to represent a standard illuminant, known as **D65**. This designation is part of the CIE (Commission Internationale de l'Éclairage) system, which defines color rendering and perception under different lighting conditions.

D65 is a daylight illuminant that approximates the color temperature of midday sunlight, which is around 6500 Kelvin. It is widely used as a reference in industries such as graphic design, photography, and manufacturing to ensure consistent color reproduction across different devices and media. The "D" in D65 stands for "daylight," while the number indicates its correlated color temperature.

In digital imaging, D65 is often applied in color profiles, such as those used in Adobe Photoshop or sRGB color spaces, to standardize how colors appear under this lighting condition. It helps maintain accuracy when transitioning between digital displays, printed materials, and real-world viewing environments. Many professional monitors and printers are calibrated to match D65 to minimize color discrepancies.

The D655 designation may also appear in contexts where additional precision is required, such as in advanced color management systems or scientific applications. While less commonly referenced than D65 alone, it reinforces the importance of standardized lighting references in visual technology. Proper calibration to D65 ensures that colors remain true to their intended appearance across various platforms.