Effects ofwaml color and cool color o ガ lthem 】 al sensation ' 「 ， the ， 「 impression ofhet − cold ' 「 and the I' impression ofwarm ・ cool 「 ， were discussed experimentally under the thermal conditions of20 and 24 ℃ in winter and 24 and 29℃ in summer ， Significant effect ofboth colors ori themmal sensation was shown under the 29 ℃ in summer ． The effect of colors on the ' 「 impression ofhot − coldl ' and the I' impression ofwarm − cool ' ， was 1arger than that on thermal sensation ． It was assumed that the former is more usua1 in the daily life from the viewpoint of attention ． The above observation showed that the alleviation effeet of colors from ' the psychological themmal load is large enough ．