Berlin blue (color)

The title of this article is ambiguous. For the chemical compound, see Berlin blue .

Berliner or Prussian blue
Components
RGB ( r , g , b )	(0, 49, 83)
Hexadecimal triplet	003153
CMYK ( c , m , y , k )	(100%, 41%, 0%, 67%)
HSL ( h , s , l )	(205 °, 100%, 32%)

Berlin blue (also Prussian blue ) is the hue of light whose emission maximum is around 475 nm. Light with this color stimulus can also be remitted as body color . It corresponds to a deep dark shade of blue.

properties

The color of the pigment is not in the gamut of possible monitor phosphors and can not be displayed on the connected monitor due to the high color saturation of the colorant. A hue that comes close to it has the value RGB = {16, 31, 112} decimal or 101F70 hexadecimal . The tristimulus values are influenced by a white mix. The type of light under which the samples are observed also changes the color impression with the same color stimulus , in particular the red cast of the pigment has an effect.

Chromaticity diagram with spectral train. The color types according to the adjacent table. The dominant wavelengths of the 90:10 mixture are constructed on the spectral color train.

Spectral data for three Berlin blue / titanium dioxide pigmentations,
for example in a stoving lacquer

Color coordinate	Light type A			Light type C
Berlin blue / titanium white	90/10	10/90	1/90	90/10	10/90	1/90
Tristimulus values
X	0.96	12.90	43.36	1.29	17.58	54.54
Y	0.95	15.69	45.94	1.14	18.80	49.52
Z	1.04	15.26	25.72	3.71	51.95	86.31
Color type according to CIE
x	0.3250	0.2947	0.3770	0.2101	0.1990	0.2505
y	0.3220	0.3578	0.3994	0.1857	0.2128	0.2746
Dominant wavelength (nm)	481.5	489.0	492.0	472.0	478.6	482.0

Individual evidence

1. ↑ Joseph A. Sisteno: Feriferrocyanide Pigments . In: Temple C. Button: Pigment Handbook . Volume I, ICd.

The colors shown in this article are not binding and may appear different on different display devices.
One possibility to approximately calibrate the display with purely visual means is offered by the adjacent test image (only with native display resolution and when the page is not displayed zoomed):

Set the display device to sRGB mode, if available. If a letter (“R” for red, “G” for green or “B” for blue) appears strongly on one or more of the three gray areas, the gamma correction of the corresponding color channel should be corrected. sRGB corresponds to a gamma value of 2.2, which is the common value for TVs and computers with Windows or macOS (from version 10.6).