#131821 (or 0x131821) is unknown color: approx Black Russian. HEX triplet: 13, 18 and 21. RGB value is (19,24,33). Sum of RGB (Red+Green+Blue) = 19+24+33=76 (10% of max value = 765). Red value is 19 (7.81% from 255 or 25% from 76); Green value is 24 (9.77% from 255 or 31.58% from 76); Blue value is 33 (13.28% from 255 or 43.42% from 76); Max value from RGB is 33 - color contains mainly: blue. Hex color #131821 is not a web safe color. Web safe color analog (approx): #000033. Inversed color of #131821 is #ECE7DE. Grayscale: #171717. Windows color (decimal): -15525855 or 2168851. OLE color: 2168851.
HSL color Cylindrical-coordinate representation of color #131821: hue angle of 218.57º degrees, saturation: 0.27, lightness: 0.1%. HSV value (or HSB Brightness) of color is 0.13% and HSV saturation: 0.42%. Process color model (Four color, CMYK) of #131821 is Cyan = 0.42, Magento = 0.27, Yellow = 0 and Black (K on CMYK) = 0.87.
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