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isGreen.html
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isGreen.html
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<!doctype html><body style=background:lime><script>
var rgb = getComputedStyle(document.body).background.match(/\d+/g);
document.write(rgb);
function rgb2hsv (r, g, b) {
let rabs, gabs, babs, rr, gg, bb, h, s, v, diff, diffc, percentRoundFn;
rabs = r / 255;
gabs = g / 255;
babs = b / 255;
v = Math.max(rabs, gabs, babs),
diff = v - Math.min(rabs, gabs, babs);
diffc = c => (v - c) / 6 / diff + 1 / 2;
percentRoundFn = num => Math.round(num * 100) / 100;
if (diff == 0) {
h = s = 0;
} else {
s = diff / v;
rr = diffc(rabs);
gg = diffc(gabs);
bb = diffc(babs);
if (rabs === v) {
h = bb - gg;
} else if (gabs === v) {
h = (1 / 3) + rr - bb;
} else if (babs === v) {
h = (2 / 3) + gg - rr;
}
if (h < 0) {
h += 1;
}else if (h > 1) {
h -= 1;
}
}
return {
h: Math.round(h * 360),
s: percentRoundFn(s * 100),
v: percentRoundFn(v * 100)
};
}
function isGreen(r,g,b){
h = rgb2hsv(r,g,b).h;
if(h >= 69 && h <= 181){
return (true);
}
return false;
}
alert(isGreen(rgb[0],rgb[1],rgb[2]));
var a = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,349,350,351,352,353,354,355,356,357,358,359];
array[Math.floor(Math.random() * a.length)]
</script>