func str2rgb(text string) string {
	s384 := sha512.New384()
	s384.Write([]byte(text))
	digest := hex.EncodeToString(s384.Sum(nil))

	subSize := len(digest) / 3

	mv := big.NewInt(math.MaxInt64)
	mv.SetString(strings.Repeat("f", subSize), 16)

	maxValue := big.NewFloat(math.MaxFloat64)
	maxValue.SetInt(mv)

	digests := make([]string, 3)
	for i := 0; i < 3; i++ {
		digests[i] = digest[i*subSize : (i+1)*subSize]
	}

	goldPoint := big.NewFloat(0.618033988749895)

	rgbLst := make([]string, 3)
	for i, v := range digests {
		in := big.NewInt(math.MaxInt64)
		in.SetString(v, 16)

		inv := big.NewFloat(math.MaxFloat64)
		inv.SetInt(in)

		inf := big.NewFloat(math.MaxFloat64)
		inf.Quo(inv, maxValue).Add(inf, goldPoint)

		oneFloat := big.NewFloat(1)
		cmp := inf.Cmp(oneFloat)
		if cmp > -1 {
			inf.Sub(inf, oneFloat)
		}
		inf.Mul(inf, big.NewFloat(255)).Add(inf, big.NewFloat(0.5)).Sub(inf, big.NewFloat(0.0000005))

		i64, _ := inf.Int64()
		//fmt.Println(i64)
		rgbLst[i] = strconv.FormatInt(i64, 16)
	}

	return strings.Join(rgbLst, "")
}