This tool is part of these guided projects. Each project provides step-by-step instructions with checklists and all the tools you need in one place.
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Color temperature in Kelvin describes the color appearance of light sources. Lower values (2700K) produce warm amber light; higher values (6500K+) produce cool blue-white light. The Planckian locus maps blackbody radiation to chromaticity.
RGB = planckianLocus(Temperature_K); approximated via Tanner Helland algorithm for 1000K–40000KD50 (5003K) is the print industry standard illuminant. D65 (6504K) is the display standard (sRGB). Tungsten is approximately 2856K (Illuminant A).
Updated: July 2026
Convert 2700K warm white LED color temperature to an RGB value for UI mockups.
→ Approximate RGB: #ffa756 (warm amber)
Find the RGB representation of standard daylight (6500K) for a photography white balance tool.
→ Approximate RGB: #fff4e8 (near-white with very slight warm tint)
Color temperature describes the hue of a light source. White point is the chromaticity that displays render as "white." A 2700K source appears orange, not white.
The Planckian locus approximation works between ~1000K and 40000K. Values below or above are physically meaningless for most practical applications.
Convert color temperature between Kelvin and RGB approximations. Map warm and cool white lighting values for photography, video, and UI white balance. It applies the kelvin to rgb conversion (RGB = planckianLocus(Temperature_K); approximated via Tanner Helland algorithm for 1000K–40000K). For example: warm living room light simulation — Convert 2700K warm white LED color temperature to an RGB value for UI mockups.