Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

Blue is hotter than white by the kelvin scale.

The hue attributed to black body radiation at a certain temperature represents the average color of the whole gamut of emitted frequency/intensities, which follows a curve with a peak that changes with the temperature (which is then perceived by the eye); this curve is a direct result of Planck's law.

At temperatures < 3000K, this is reddish At temperatures between 3000-6000K, it becomes orange and then yellow At temperatures around 6500K, it is white (this is close to sunlight, so the eye is tuned to this distribution and sees it as even) At above 6500, it becomes increasingly blue.



That's right, thanks for the correction.




Consider applying for YC's Fall 2026 batch! Applications are open till July 27.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: