A semi-transparent type that is properly sorted and does not show the contents too clearly.
■What is Universal Color?
It refers to the use of colors that take into account people with different perceptions of color. In Japan, individuals with color vision diversity, known as color blindness or color vision abnormalities, include approximately 1 in 20 men and about 1 in 500 women, totaling over 3.2 million people nationwide.
■The Mechanism of Color Vision
The human retina contains two types of photoreceptor cells: rods, which function in low light, and cones, which operate in bright light. There are three types of cones: L (red), M (green), and S (blue), each differing in their spectral sensitivity, or the wavelengths of light they primarily respond to.