Sapphire blue is a kind of blue, the color of pure sapphire, bright blue, also known as sapphire blue.
Sapphire blue is considered a pure blue in the color spectrum. The tone is very pure and has a pearlescent luster. Therefore, it is considered a kind of pearlescent color and is a cool color. The color value is accurately positioned at (0, 47, 167). In chemistry, the color of copper sulfate solution (CuSO4) is royal blue.
Sapphire blue is a color with an extremely strong sense of visual invasion. This blue has enjoyed a production patent since 1957 and has an official name, International Klein International Klein Blue. Its owner is French contemporary artist Yves Klein.
The application of sapphire blue is also deeply loved by various teams in the sports world, and many teams apply sapphire blue to their uniforms. It has become very popular in recent years, with many makeup and clothing incorporating sapphire blue elements. It is a blue color that shines in the fashion circle. It can be seen that sapphire blue is being favored by more and more people. The combination of royal blue and white looks very noble, so it is also very popular among many ladies.
The scientific definition of sapphire blue:
In visible light, the frequency range of blue is 600~660THz, corresponding to the wavelength in the air of 500~450nm, the most positive blue frequency is 640THz , corresponding to the wavelength of 470nm in air and the hue of 210 degrees. Or according to Newton's seven colors in English, ROYGBIV (red, orange, yellow, green, blue, indigo violet), this color between blue and purple can also be called indigo.
According to the CIE standard, the standard frequency of B (hue 240 degrees) in the three additive primary colors is 690THz, which corresponds to a wavelength of 435nm in the air, and the purple light frequency is 750THz, which corresponds to a wavelength of 400nm in the air, so the CIE regulations The frequency of B, which adds the three primary colors, is between true blue light and violet light. It is actually a purple-leaning blue-violet.
Reference for the above content: Baidu Encyclopedia-Sapphire Blue