\documentclass[tikz]{standalone}
\definecolor{bg}{HTML}{171D2B}
\definecolor{acc}{HTML}{F7B538}
\begin{document}
\pagecolor{bg}
\begin{tikzpicture}[
  scale=1.05,
  x={(0.95cm,0.42cm)}, y={(0cm,1cm)}, z={(-0.85cm,0.52cm)},
  inner/.style={white!55!bg, line width=0.55pt},
  outer/.style={white, line width=1.1pt, line join=round},
  hid/.style={white!40!bg, line width=0.7pt},
]
% --- lattice segments inside the 3 x 2 x 2 block (x-length 3, y 2, z 2) ---
\foreach \i in {0,...,2}{ \foreach \j in {0,...,2}{ \foreach \k in {0,...,2}{
  \draw[inner] (\i,\j,\k) -- (\i+1,\j,\k); }}}
\foreach \i in {0,...,3}{ \foreach \j in {0,...,1}{ \foreach \k in {0,...,2}{
  \draw[inner] (\i,\j,\k) -- (\i,\j+1,\k); }}}
\foreach \i in {0,...,3}{ \foreach \j in {0,...,2}{ \foreach \k in {0,...,1}{
  \draw[inner] (\i,\j,\k) -- (\i,\j,\k+1); }}}
% --- outer box edges (thicker) ---
\foreach \j in {0,...,2}{ \foreach \k in {0,...,2}{ \draw[outer] (0,\j,\k) -- (3,\j,\k); }}
\foreach \i in {0,...,3}{ \foreach \k in {0,...,2}{ \draw[outer] (\i,0,\k) -- (\i,2,\k); }}
\foreach \i in {0,...,3}{ \foreach \j in {0,...,2}{ \draw[outer] (\i,\j,0) -- (\i,\j,2); }}
% --- hidden back edges of the box, dashed ---
\draw[hid] (3,2,0) -- (3,2,2);
\draw[hid] (3,0,2) -- (3,2,2);
\draw[hid] (0,2,2) -- (3,2,2);
% --- one highlighted unit cube (front-bottom-right), accent ---
\draw[acc, line width=1.4pt, line join=round]
  (2,0,0) -- (3,0,0) -- (3,1,0) -- (2,1,0) -- cycle
  (2,0,0) -- (2,0,1) -- (3,0,1) -- (3,0,0)
  (2,1,0) -- (2,1,1) -- (3,1,1) -- (3,1,0)
  (2,0,1) -- (2,1,1) -- (3,1,1);
% --- dimension labels ---
\node[white, below] at (1.5,-0.3,0.4) {\large 3 cm};
\node[white, left]  at (-0.2,1,0) {\large 2 cm};
\node[white, right] at (3.3,1,1) {\large 2 cm};
\node[white, font=\small, anchor=west] at (4.3,2.3,1.9)
  {1 kubus kecil $= 1\ \mathrm{cm}^3$};
\node[acc, font=\bfseries\Large, anchor=west] at (4.3,2.3,0.9) {$V = 3 \times 2 \times 2$};
\node[acc, font=\bfseries\Large, anchor=west] at (4.3,2.3,0.2) {$\phantom{V} = 12$ kubus satuan};
\end{tikzpicture}
\end{document}