Using a variable (?) to change color definition on STY file

I am trying to use a variable I define with newcommand in a tex file (profile) in an if-else loop to define a color (main_color) in the style-file I am using. So when profile is np main_color should be Hex Code 2A4A97, else it should be a5003b. I tried

ifthenelse{equal{profile}{np}}
    {definecolor{main_color}{HTML}{2A4A97}}
    {definecolor{main_color}{HTML}{a5003b}}

but then I’m getting the following error: ! Undefined control sequence. <argument> profile

The MWE is as follows:

mwe.tex

documentclass[a4paper]{scrartcl}
usepackage{blindtext}
usepackage{mwe}

newcommand{profile}{detokenize{np}}            

begin{document}

customtitlepage

section{Section One}

blindtext
                       
end{document}

The style used is this (mwe.sty):

ProvidesPackage{mwe}
 
RequirePackage[ngerman]{babel}
RequirePackage[margin=2.5cm]{geometry}
RequirePackage[]{xcolor}
RequirePackage{fontspec}
RequirePackage{ifthen}

% ---------------- Colors

definecolor{main_color}{HTML}{2A4A97}

% ifthenelse{equal{profile}{np}}
%     {definecolor{main_color}{HTML}{2A4A97}}
%     {definecolor{main_color}{HTML}{a5003b}}

% ---------------- Titlepage Definition 

defcustomtitlepage{
    begin{titlepage}
    
        raggedleft
        
        {huge Title vspace{0.25cm}}

        {color{main_color}rule{12cm}{3pt}} % Thick horizontal rule
        
        vspace{2.5cm} 
        
        raggedright
        
        {huge profile vspace{0.25cm}}

        {color{main_color}rule{9.3cm}{3pt}} % Second Thick horizontal rule
        
        vfill
        
        centering
        
        Text
        
        vfill
    
        vspace{0.5cm}
        
        {color{main_color}rule{textwidth}{3pt}}
        
        vspace{1cm}
    end{titlepage}
}

The tex files are generated automatically and profile is used in several other places in the style, so I’d like to use it for this purpose as well.

Thanks!