Blue-Heart-Duh

:thumb178635555: Blue is a colour The perception of which is evoked by light having a spectrum dominated by energy with a wavelength of roughly 440–490 nm. It is considered one of the additive primary colours In the English language, blue often represents the human emotion of sadness. "He was feeling blue" :( In German, on the other hand, to be "blue" (blau sein) is to be drunk :drunk: Blue is also the colour for loyalty! It may also be in relation to rain, which is usually regarded as a trigger of depressive emotions. Blue also represents happiness and optimism Days with clearer, blue skies tend to be considered happy days.