In this study, it is aimed to determine the effect of some varnish applied to wood material on metric chroma value. For this purpose, water-based, polyurethane and acrylic varnish were applied to samples prepared from pine (Pinus sylvestris L.) and chestnut (Castanea sativa M.) woods. Prior to experiment, the samples were air-conditioned at temperature of 20±2°C and relative humidity 65±5, according to the principles of TS EN 2624 for 24 hours. The air-conditioned samples were sanded twice with 150 number sanders. Varnish aplication was made perpendicular to the fibers and cross-fold applicatin in parallel direction to the fibers. After drying the varnish coat for 24 hours, the drying samples are sanded and the last layer of silk matte varnish is applied. The color in wood is an important criterion. External weather conditions, fungus, insect, etc. are causing the material to become discolored. Paints such as paint and varnish are applied to the wood against these unwanted color distortions. Surface treatment is applied to extend the life of the wood material and prevent any discoloration. Metric chroma is the color or color change in which the main color components are defined. Chroma (C* = (a*2 + b*2)1/2) gives further information on the saturation or intensity of color [1]. The experiment samples were prepared according to the principles stated in TS 2470. The moisture content of the samples was determined according to TS 2471, density values were determined according to TS 2472. Varnish applications were carried out according to ASTM-D 3023 standard and according to manufacturer's recommendations. The metric chroma measurement was performed using the Minolta CR-231 color measuring device in accordance with the requirements of ASTM D-2244. The data obtained were evaluated statistically. As a result, the metric chroma value was obtained in the samples which were applied in the tangent direction of the yellow pine with water-based varnish.