Color Temperature Converter

Convert Kelvin to RGB, read the colour temperature of a colour and preview the light.

Convert colour temperature

RGB: rgb(255, 214, 168) · HEX: #ffd6a8
Correlated colour temperature: 2700 K
Description: Warm white light
Kelvin values use the standard black body approximation, and correlated colour temperature uses McCamy's cubic fit.

How to use the Color Temperature Converter

  1. Move the Kelvin slider to see the matching light colour.
  2. Switch to the colour field to read the temperature of a colour.
  3. Copy the hex or RGB value for use in your own styles.

Features

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Frequently Asked Questions

Common questions about the free online color temperature converter.

It describes the tone of a white light source in kelvin, from warm orange around two thousand seven hundred to cool blue above six thousand.
The tool uses the standard black body approximation, fitting the red, green and blue channels against the Planckian locus over the visible range.
It is the kelvin value of the black body light that looks closest to a given colour, estimated here with McCamy's cubic fit in CIE 1931 space.
Around five thousand six hundred for direct midday sun and about six thousand five hundred for the standard D65 white point used by screens.
Warm white lamps sit between two thousand seven hundred and three thousand kelvin, which gives the familiar yellowish glow of an evening interior.
Photography white balance, lighting design, screen calibration and design systems all rely on it to keep whites looking neutral and consistent.
McCamy's fit assumes a light source near the Planckian locus. Saturated or tinted colours fall far away, so the result is flagged as not measurable.
It is a well known approximation. Real lamps, cameras and screens shift the colour slightly, so treat the output as a close practical guide.
Yes. The copy buttons put the hex and the rgb() values on your clipboard so they can be pasted into styles or documents.

Last updated: October 10, 2026