Private, browser-local utility
Color Temperature Converter
Convert 1667–25000 K into a clearly labeled approximate sRGB and HEX display preview using a documented colorimetric pipeline.
Your input and result stay in this browser tab. Nothing is uploaded, fetched, logged, or stored.
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Approximate display color
Preview
Approximation method
Supports 1667–25000 K. It uses a piecewise CIE 1931 Planckian-locus chromaticity approximation, converts xyY (Y=1) to XYZ, transforms to sRGB, scales/clips out-of-gamut channels, compands, and rounds to 8-bit RGB. The swatch is an approximate display preview—not an exact lamp spectrum, camera white balance, or measurement of real light. Reverse RGB-to-Kelvin conversion is not provided.