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Light Dependent Resistance (LDR) is one type of resistor whose resistance value is influenced by the intensity of light received by it. This study aims to measure the amount of resistance in each color of light measured in the LDR. The research method is carried out by making a measurement device in which a light source that is parallel to the LDR is placed, between which a color layer is inserted which will change the white light from the lamp to the color light according to the color layer used. Variation in the distance (x) between lights and LDR causes greater resistance. The results of this study indicate that when the distance of 0.52 m the amount of red resistance is 44000 ± 0.5 Ω with an error 0.00114%, yellow 48300 ± 0.5 Ω with an error 0.00114%, green 96120 ± 26.29 Ω with an error 0.02735%, blue 114910 ± 10.54 Ω with error 0.00917 %, purple 129150 ± 47.79 Ω with an error of 0.037%. These results show an inversely proportional between resistance and light intensity.