farvekode

Farvekode (Danish for color code) refers to systems that assign a numeric or named label to a color, enabling precise communication across design, manufacturing, printing, and technology. It encompasses both digital representations and physical color standards.

In digital media, colors are typically represented by the RGB color model, combining red, green, and blue light. Common encodings use 8-bit channels, yielding values from 0 to 255, and hex notation such as #RRGGBB. Other forms include HSL and HSV, which separate hue from lightness or saturation to aid in selecting colors by perceptual properties.

For printing and physical materials, the CMYK color model is standard, using cyan, magenta, yellow, and black. To ensure consistent color across products and brands, standardized libraries such as Pantone (PMS), RAL, and NCS are widely used. Pantone provides spot colors for exact matching, while RAL is common for paints and coatings, and NCS describes perceptual color relationships.

There are also specialized color codes in engineering and electronics, such as resistor color codes, where bands on a component convey numerical values. These schemes are distinct from digital color codes but share the goal of conveying color information quickly and unambiguously.

The use of color codes has implications for accessibility and internationalization. Designers should consider color vision deficiencies and provide sufficient contrast, and documentation should specify the exact standard or color space in use to avoid ambiguity.