Table 1 Measured chromatic coordinates L*, a*, and b*

From: Integrated analytical study of materials and degradation in the Ming Dynasty loess wall paintings at Shaanxi Suide Guanyin Temple, China

Sample

Colour

Chromatic coordinates

L*

a*

b*

SP-1

Green

60.41 ± 0.14

-6.49 ± 0.11

12.5 ± 0.05

Black

40.55 ± 0.01

-0.57 ± 0.03

3.42 ± 0.03

SP-2

Red

58.75 ± 0.12

14.49 ± 0.13

14.77 ± 0.18

SP-3

Reddish orange

60.25 ± 0.06

21.37 ± 0.09

22.1 ± 0.21

SP-4

White

72.19 ± 0.04

1.4 ± 0.10

8.46 ± 0.15

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