Change only the color of the chapters link in the toc using hyperref

Question

My actual situation

I set (with the following commands) that in the table of contents each chapter element is represented with the color steelblue, while sections and subsections are represented in black.

\RequirePackage{titletoc}
\setcounter{tocdepth}{2}

\titlecontents{chapter}[0cm]
{\addvspace{14pt}\large\sffamily\bfseries}
{\color{steelblue}\contentslabel[\Large\thecontentslabel]{1.25cm}}{}
{\color{steelblue}\normalsize\sffamily\bfseries
 \;\titlerule*[.5pc]{.}\;\thecontentspage}

\titlecontents{section}[0cm]
{\addvspace{6pt}\sffamily\bfseries}
{\contentslabel[\thecontentslabel]{1.25cm}}{}
{\sffamily\hfill\color{black}\thecontentspage}[]

The problem is that my toc does not create any links to the referenced pages.
Therefore, in order to generate a toc with the links, I thought to add the hyperref package

The issue

After adding the package named above, I cannot determine how to color the chapters of the toc (steelblue) differently from all other components.
I have found a workaround, which I mark in the following code, but I am not satisfied with it as the clickable reference is only placed on the page number (and not on the chapter/section/... "tag")

\hypersetup{
    bookmarksnumbered=true,     
    bookmarksopen=true,         
    bookmarksopenlevel=3,   
    colorlinks, 
    breaklinks,
    linkcolor=blue,
    citecolor=blue,
    filecolor=black,
    linktocpage=true, 
}

My goal

I am trying to figure out how to change just the color of the chapter links in the toc of my project.
Unfortunately, just putting colorlinks=true in the hypersetup everything becomes monochrome (which is red by default, but even changing it with linkcolor the issue is still the same).

MWE

main.tex

\documentclass{mybook}

\renewcommand{\familydefault}{\sfdefault}
\setlength{\parindent}{0pt}

\begin{document}
\tableofcontents

%---------------------------------------------------------------------------
% Chapters
%---------------------------------------------------------------------------
\chapter{Chapter 1}
\section{Section 1.1}
\section{Section 1.2}

\chapter{Chapter 2}

\end{document}

mybook.cls

\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{mybook}
\LoadClass[11pt]{book}

% Colors
%--------------------------------------------------------------------------
\RequirePackage{xcolor}
\definecolor{steelblue}{RGB}{70,130,180}

% Table of contents styling
%--------------------------------------------------------------------------
\RequirePackage{titletoc}
\setcounter{tocdepth}{2}

\titlecontents{chapter}[0cm]
{\addvspace{14pt}\large\sffamily\bfseries}
{\color{steelblue}\contentslabel[\Large\thecontentslabel]{1.25cm}}{}
{\color{steelblue}\normalsize\sffamily\bfseries
 \;\titlerule*[.5pc]{.}\;\thecontentspage}

\titlecontents{section}[0cm]
{\addvspace{6pt}\sffamily\bfseries}
{\contentslabel[\thecontentslabel]{1.25cm}}{}
{\sffamily\hfill\color{black}\thecontentspage}[]

Answer 1

You can use \hypersetup{<options>} as in How to use different colors for different \href commands?

\titlecontents{chapter}[0cm]
{\hypersetup{linkcolor=black}\color{green}\addvspace{14pt}\large\sffamily\bfseries} %<!---- NEW BIT
{\hypersetup{linkcolor=steelblue}\contentslabel[\Large\thecontentslabel]{1.25cm}}   %<!---- NEW BIT
{}
{\normalsize\sffamily\;\color{red}\titlerule*[.5pc]{.}\;\thecontentspage}

The code below gives the following:

Here's a complete edited version of mybook.cls; I've marked the new bits.

mybook.cls

\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{mybook}
\LoadClass[11pt]{book}

% Colors
%--------------------------------------------------------------------------
\RequirePackage{xcolor}
\definecolor{steelblue}{RGB}{70,130,180}

% Table of contents styling
%--------------------------------------------------------------------------
\RequirePackage{titletoc}
\RequirePackage{hyperref}   %<!-------- NEW BIT
\setcounter{tocdepth}{2}

%
% default hyperref settings
%
\hypersetup{
    bookmarksnumbered=true,
    bookmarksopen=true,
    bookmarksopenlevel=3,
    colorlinks,
    breaklinks,
    linkcolor=blue,
    citecolor=blue,
    filecolor=black,
    linktoc=all,  %<!--------- NEW BIT
}

%
% chapter
%
\titlecontents{chapter}[0cm]
{\hypersetup{linkcolor=black}\color{green}\addvspace{14pt}\large\sffamily\bfseries} %<!---- NEW BIT
{\hypersetup{linkcolor=steelblue}\contentslabel[\Large\thecontentslabel]{1.25cm}}   %<!---- NEW BIT
{}
{\normalsize\sffamily\;\color{red}\titlerule*[.5pc]{.}\;\thecontentspage}

% 
% section
%
\titlecontents{section}[0cm]
{\hypersetup{linkcolor=yellow}\addvspace{6pt}\sffamily\bfseries}        %<!---- NEW BIT
{\hypersetup{linkcolor=orange}\contentslabel[\thecontentslabel]{1.25cm}}%<!---- NEW BIT
{}
{\sffamily\hfill\color{black}\thecontentspage}[]