Warm · cool · Kelvin estimate
Color temperature tool
Classify a color as warm, cool, or neutral and see a rough correlated color temperature (Kelvin) readout. Compare two HEX values to decide if a hero gradient feels cohesive or fights itself.
Why this tool exists
Marketing language mixes “warm minimal” with icy blue photography. This tool grounds the argument in hue and gives you vocabulary for reviews when two grays clash.
How to use it
- Enter your primary HEX (e.g. brand orange or navy).
- Read warm/cool label and approximate Kelvin.
- Add a second HEX to compare temperature direction.
- Adjust photography or UI chrome so accents agree, then lock tokens in the picker.
Use a different tool when…
You need precise white-point calibration for print — use spectrophotometer data, not this estimate.
Practical tips
- Kelvin here is heuristic from hue/lightness, not a measured black-body curve.
- Neutrals with low saturation often read “neutral” even when slightly warm.
- Pair warm heroes with warm grays; mixing cool gray text on warm orange feels muddy.
FAQ
How is Kelvin estimated?
From hue angle with lightness bias — a design heuristic, not physics.
Why do two blues disagree?
Green-shifted vs magenta-shifted blues read different temperatures at same HEX lightness.
Can I use this for white balance?
No — photography white balance needs camera RAW tools.
What counts as warm?
Roughly hues in red-orange-yellow arcs on the wheel, plus low-saturation creams.
Does it support OKLCH input?
Enter HEX only today; convert via the color converter first.