The following code mimics Steven B. Segletes' answer to the question posed in Adding a Letter to an Image in a Do-It-Yourself Lettrine:
\documentclass[12pt]{book}
\usepackage{yfonts,xcolor,scalerel,stackengine,lettrine}
\definecolor{Blood}{RGB}{142,0,28}
\definecolor{Gold}{RGB}{255,179,0}
\setlength{\textwidth}{5.5in}
\fboxsep=1pt
\newcommand\mylettrine[2][2.75ex]{\scaleto{\colorbox{Blood}{%
\initfamily\textcolor{Gold}{\abovebaseline[0pt]{#2}}}}{#1},}
\usepackage[sfdefault]{cabin}
\begin{document}
\thispagestyle{empty}
\LARGE
\lettrine[lines=3,loversize=0.25,nindent=0.4em,findent=-0.6em]{\mylettrine{N}}{on} semper erat aestas.\[30pt]
\lettrine[lines=3,loversize=0.25,nindent=0.4em,findent=-0.6em]{\mylettrine{W}}{}\[30pt]
\lettrine[lines=3,loversize=0.25,nindent=0.4em,findent=-0.6em]{\mylettrine{R}}{}
\end{document}
which produces the output
As you can see, the lettrines are not all of uniform size---and stackengine seems to accommodate the various letter sizes quite nicely; however, a little "tweaking" is in order, as the initfamily lettrine letter that I am trying to add a background color to also contains decorative florishes that extend beyond the given letter, and consequently, outside of the colored box I am trying to "stack" the letter on.
I have tried adjusting the \fboxsep command various ways, but have seemingly made matters a little worse.
QUESTION: Is there a way to, and if so, how, may I uniformly adjust the colored background so that all of these initfamily decorative lettrines may appear reasonably centered on the colored background with all the jumping flourishes nicely contained within the squarish colored box?
Thank you.


\fboxsep=5pt, because it interacts with the scaling? What does "worse" mean (in or out?)? – Cicada Aug 24 '22 at 15:35