Create an approximate 8-bit sRGB screen record from an entered 1,000–40,000 K model value without predicting a lamp, room, camera, or human response.
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Create a reproducible approximate 8-bit sRGB screen record from one entered 1,000–40,000 K model value while keeping real source, fixture, room, camera and human-response decisions outside the algorithm.
Generate one stable screen-space reference without calling it a measured illuminant.
Enter the model Kelvin value, retain algorithm/version and copy the approximate RGB/HEX record with its display-only boundary.
Can reproduce the swatch without claiming spectral, device-independent or appearance accuracy.
Avoid choosing a lamp or room atmosphere from a generated hex color.
Use the Tool only for orientation, then compare exact product CCT, tint, lumens, rendering, flicker/dimming, glare and in-room samples separately.
Selects or rejects a product from exact evidence and affected-person observations, not the swatch.
Keep camera white balance, standard observers/illuminants, display profiles and human effects outside a one-input fit.
Inspect the algorithm branch and rounded channels, then use calibrated/spectral/colorimetric tools for the actual task.
Can reject the approximation when Duv, SPD, CRI/TM-30, luminance, camera/display calibration or person-specific evidence is required.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
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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The calculator divides the entered Kelvin value by 100, applies a low-input logarithmic or high-input power branch, then rounds and clamps each channel to an 8-bit sRGB value. This is not a physical black-body, spectral, photometric, fixture, material, room, camera, or human-response simulation.
Inputs from 1,000 K through 40,000 K are accepted only because that is the documented domain of this empirical fit. Those endpoints are not product limits, room recommendations, safe ranges, or evidence that a real source follows the model path.
The RGB and HEX outputs agree with the same rounded sRGB channels. Exact product spectrum, chromaticity or tint, lumens or illuminance, CRI/TM-30, flicker, dimming, glare, display profile, material appearance and affected-person response require separate evidence.
Updated: August 2026
Retain the entered model value, algorithm basis and generated sRGB/HEX record as one reproducible screen-space reference—not a measured illuminant.
Use the swatch only to start a comparison, then verify the exact product’s CCT, tint, output, rendering, dimming, flicker, ratings and in-room observations independently.
Do not use this Tool when the task needs spectral or colorimetric measurement, calibrated camera/display behavior, material rendering, lighting design, electrical approval, accessibility, medical or circadian evidence.
The output is one algorithm-specific sRGB screen record. Real sources and rooms require exact product, spectral/colorimetric, photometric, material, display and observation evidence.
Needs, products, tint, output, rendering, glare, flicker, dimming, surfaces, daylight, age and affected-person responses vary. Compare the exact room and product instead.
Enter one model Kelvin value to create a reproducible approximate 8-bit sRGB preview. The result is intentionally narrow: it does not select a lamp or fixture, reproduce a spectrum, predict paint or skin appearance, set camera white balance, establish electrical suitability, or make health, safety, accessibility or room-quality claims.