Because the frequency of light emitted by this hot state comes in the red range. However, molten lava actually ranges from yellow to orange and then red. The wavelength tends to grow redder as the lava cools. Finally turning to black upon cooling

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Lava is a color that is a shade of red. It is named after the color of volcanic lava. This is the color of fresh lava pouring out of a volcano. The first recorded use of lava as a color name in English was in 1891.

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Lava is a color that is a shade of red. It is named after the color of volcanic lava. This is the color (color #CF1020) of fresh lava pouring out of a volcano. The first recorded use of lava as a color name in English was in 1891

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Because of heat radiation

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because it's hot – in fact, lava can reach up to 1,250 degrees Celsius (2,282 degrees Fahrenheit). Heat excites atoms, which can boost atoms' electrons to higher orbitals. When an excited electron returns to its normal orbital, it releases its excess energy as a light photon.

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