How can I convert RGB points in decimal value to HEX color code to get the color in javacript

Question

I have following set of RGB points which I want to convert as a color Code.

"colors": 
[
   [ 1.00, 0.00, 0.00 ],
   [ 0.71, 0.71, 0.00 ],
   [ 0.00, 1.00, 0.00 ],
   [ 0.00, 0.71, 0.71 ],
]

I want something like ##00bfff. If I would have points something like (247, 255, 164), I can use below function and convert but my points are in decimal values.

function RGBToHex(rgb: number[]) {
    let r = rgb[0].toString(16),
    g = rgb[1].toString(16),
    b = rgb[2].toString(16);
    if (r.length == 1) r = "0" + r;
    if (g.length == 1) g = "0" + g;
    if (b.length == 1) b = "0" + b;
    return "#" + r + g + b;
}