Color contrast

September 12, 2011
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Also need the HSV instead of HSL

http://drpeterjones.com/colorcalc/

http://www.had2know.com/technology/color-contrast-calculator-web-design.html

http://contrast-a.dasplankton.com/

http://www.google.com/#sclient=psy&hl=en&source=hp&q=calculate+contrast+color&pbx=1&oq=calculate+contrast+color&aq=f&aqi=g1&aql=&gs_sm=e&gs_upl=4743l13042l0l13447l24l23l0l6l6l1l406l3558l1.8.7.1.1l18l0&fp=1&biw=1280&bih=912&bav=on.2,or.r_gc.r_pw.&cad=b

RGB difference RYB
red 0 0 0 red
15 15 30 r-o
orange 30 30 60 orange
45 45 90 y-o
yellow 60 60 120 yellow
spring green 90 60 150 y-g
green 120 60 180 green
turquoise 150 60 210 b-green
Aqua/cyan 180 40 220
ocean 210 20 230
blue 240 0 240 blue
255 15 270 blue violet
violet 270 30 300 violet
fuchsia/magenta 300 15 315
Raspberry 330 0 330 red-violet 8

RGB2RYB.mht (11.43 kb)

colors.xlsx (12.88 kb)

colors.xls (12.88 kb)