What are all kinds of blue senior titles?

1. Indigo: The leaves of Polygonum cuspidatum are soaked in water and precipitated with lime to obtain a blue dye, which is blue-green.

2. Indigo: Also known as "Indigo", it is a blue dye extracted from Indigo or Isatis indigotica.

3. Sky blue: China traditional color terms, deep blue and cyan.

The blue and clear sky is fresh, open and comfortable.

5, sapphire dyed indigo, bright and bright blue.

6. Violet blue: there is red in blue, one is dark blue, and RGB is about 7, 1 1, 80.

7. Indigo: dark blue, a traditional color term in China. Indigo color code: 425066.

8. Lake blue: a deep blue similar to sapphire, a color between blue and green, and the same color as the lake.

Due to the regional and cultural differences of color cards, the color classification of color cards provided above is the current domestic classification standard.