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Thailand flag colors

Thailand standardised its flag colours in 2017, on the hundredth anniversary of the design, and did it more rigorously than almost anyone. The announcement defines each colour in CIELAB under D65 illumination and sets a tolerance of 1.5 delta E, which is roughly the point where a trained eye stops seeing a difference.

Every color

ColorRoleHexRGBHSLPantoneCMYKPreview
Redprimary#A51931165, 25, 49350, 74%, 37%--24, 100, 83, 18Fill screen
Whitebackground#F4F5F8244, 245, 248225, 22%, 96%--3, 2, 1, 0Fill screen
Bluesecondary#2D2A4A45, 42, 74246, 28%, 23%--87, 85, 42, 43Fill screen

Contrast pairs

Red passes AA for body text on white, at 7.5 to 1.

Of 20 ordered pairs in this palette, 12 clear 4.5 to 1 for body text and 12 clear 3 to 1 for large text. Row is the text color, column is the background.

Text colorRedWhiteBlueWhiteBlack
Red6.9Red on White, passes AA for body text1.8Red on Blue, fails AA for body text7.5Red on White, passes AA for body text2.8Red on Black, fails AA for body text
White6.9White on Red, passes AA for body text12.5White on Blue, passes AA for body text1.1White on White, fails AA for body text19.3White on Black, passes AA for body text
Blue1.8Blue on Red, fails AA for body text12.5Blue on White, passes AA for body text13.6Blue on White, passes AA for body text1.5Blue on Black, fails AA for body text
White7.5White on Red, passes AA for body text1.1White on White, fails AA for body text13.6White on Blue, passes AA for body text21.0White on Black, passes AA for body text
Black2.8Black on Red, fails AA for body text19.3Black on White, passes AA for body text1.5Black on Blue, fails AA for body text21.0Black on White, passes AA for body text
See these colors on a designOpen palette in generatorMake a gradientCheck contrast

Sources

All 115 country flags, A to Z

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