This is my Color3 lerper 
Color3 = function(C0, C1)
local L0, U0, V0
local R0, G0, B0 = C0.R, C0.G, C0.B
R0 = R0 < 0.0404482362771076 and R0 / 12.92 or 0.87941546140213 * (R0 + 0.055) ^ 2.4
G0 = G0 < 0.0404482362771076 and G0 / 12.92 or 0.87941546140213 * (G0 + 0.055) ^ 2.4
B0 = B0 < 0.0404482362771076 and B0 / 12.92 or 0.87941546140213 * (B0 + 0.055) ^ 2.4
local Y0 = 0.2125862307855956 * R0 + 0.71517030370341085 * G0 + 0.0722004986433362 * B0
local Z0 = 3.6590806972265883 * R0 + 11.4426895800574232 * G0 + 4.1149915024264843 * B0
local _L0 = Y0 > 0.008856451679035631 and 116 * Y0 ^ (1 / 3) - 16 or 903.296296296296 * Y0
if Z0 > 0.0000000000000010000000000000001 then
local X = 0.9257063972951867 * R0 - 0.8333736323779866 * G0 - 0.09209820666085898 * B0
L0, U0, V0 = _L0, _L0 * X / Z0, _L0 * (9 * Y0 / Z0 - 0.46832)
else
L0, U0, V0 = _L0, -0.19783 * _L0, -0.46832 * _L0
end
local L1, U1, V1
local R1, G1, B1 = C1.R, C1.G, C1.B
R1 = R1 < 0.0404482362771076 and R1 / 12.92 or 0.87941546140213 * (R1 + 0.055) ^ 2.4
G1 = G1 < 0.0404482362771076 and G1 / 12.92 or 0.87941546140213 * (G1 + 0.055) ^ 2.4
B1 = B1 < 0.0404482362771076 and B1 / 12.92 or 0.87941546140213 * (B1 + 0.055) ^ 2.4
local Y1 = 0.2125862307855956 * R1 + 0.71517030370341085 * G1 + 0.0722004986433362 * B1
local Z1 = 3.6590806972265883 * R1 + 11.4426895800574232 * G1 + 4.1149915024264843 * B1
local _L1 = Y1 > 0.008856451679035631 and 116 * Y1 ^ (1 / 3) - 16 or 903.296296296296 * Y1
if Z1 > 0.0000000000000010000000000000001 then -- 1E-15
local X = 0.9257063972951867 * R1 - 0.8333736323779866 * G1 - 0.09209820666085898 * B1
L1, U1, V1 = _L1, _L1 * X / Z1, _L1 * (9 * Y1 / Z1 - 0.46832)
else
L1, U1, V1 = _L1, -0.19783 * _L1, -0.46832 * _L1
end
return function(DeltaTime)
local L = (1 - DeltaTime) * L0 + DeltaTime * L1
if L < 0.0197955 then
return BLACK_COLOR3
end
local U = ((1 - DeltaTime) * U0 + DeltaTime * U1) / L + 0.19783
local V = ((1 - DeltaTime) * V0 + DeltaTime * V1) / L + 0.46832
local Y = (L + 16) / 116
Y = Y > 0.206896551724137931 and Y * Y * Y or 0.12841854934601665 * Y - 0.01771290335807126
local X = Y * U / V
local Z = Y * ((3 - 0.75 * U) / V - 5)
local R = 7.2914074 * X - 1.5372080 * Y - 0.4986286 * Z
local G = -2.1800940 * X + 1.8757561 * Y + 0.0415175 * Z
local B = 0.1253477 * X - 0.2040211 * Y + 1.0569959 * Z
if R < 0 and R < G and R < B then
R, G, B = 0, G - R, B - R
elseif G < 0 and G < B then
R, G, B = R - G, 0, B - G
elseif B < 0 then
R, G, B = R - B, G - B, 0
end
R = R < 0.0031306684424999998 and 12.92 * R or 1.055 * R ^ (1 / 2.4) - 0.055 -- 3.1306684425E-3
G = G < 0.0031306684424999998 and 12.92 * G or 1.055 * G ^ (1 / 2.4) - 0.055
B = B < 0.0031306684424999998 and 12.92 * B or 1.055 * B ^ (1 / 2.4) - 0.055
return Color3.new(
R > 1 and 1 or R < 0 and 0 or R,
G > 1 and 1 or G < 0 and 0 or G,
B > 1 and 1 or B < 0 and 0 or B
)
end
end;