Color Range for the Proper Color Coding

Abstract

In order to improve the effectiveness of color coding for industrial plants, ranges of colors were measured, which most participants identified by the same color name. Six colors were selected because they are used for color coding in large-scale plants: red, orange, yellow green, green and blue. Since workplace is often dark in the plants, three illuminance levels were set, 10 lx, 50 lx and 500 lx. Based on the results, color ranges that more than 95% of the participants identified as the same color name under all illuminance levels were determined.