\documentclass[border=10]{standalone}
%\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{decorations.text}
\usepackage{anyfontsize}
\usepackage{xcolor}



\definecolor{epsilon-purple}{rgb}{0.19,0.086,0.388}
%neonvihreä
\definecolor{vlehti}{rgb}{0.5,1,0.3}
\definecolor{vreuna}{rgb}{0.2,0.8,0.1}
\definecolor{vteksti}{rgb}{0.2,0.8,0.1}

%vihreä
\definecolor{vlehti}{rgb}{0,1,0}
\definecolor{vreuna}{rgb}{0,0.7,0}
\definecolor{vteksti}{rgb}{0,1,0}

%kulta
\definecolor{vlehti}{rgb}{0.917647, 0.741176, 0}
\definecolor{vreuna}{rgb}{0.817647, 0.641176, 0}
\definecolor{vteksti}{rgb}{0.817647, 0.641176, 0}

\begin{document}

%muoto lehdelle
\def\lehti#1#2#3{
\begin{scope}[shift={#1}, rotate=#2,scale=#3]
    \filldraw[fill=vlehti,draw=vreuna] (0,1) .. controls (1,0) and (-1,0) .. (0,1);
    \filldraw[color=vreuna] (0,0.5) -- (-0.05,0)--(0.05,0)--cycle;
\end{scope}
}

\def\lehti#1#2#3{
\begin{scope}[shift={#1}, rotate=#2,scale=#3]
    \filldraw[fill=vlehti,draw=vreuna] (0,1) .. controls (1,0) and (-1,0) .. (0,1);
    \filldraw[color=vreuna] (0,0.75) -- (-0.05,0)--(0.05,0)--cycle;
    \filldraw[color=vreuna] (0,0.35) -- ++(40:0.25)--(0,0.36)--cycle;
    \filldraw[color=vreuna] (0,0.35) -- ++(140:0.25)--(0,0.36)--cycle;
    \filldraw[color=vreuna] (0,0.5) -- ++(50:0.2)--(0,0.51)--cycle;
    \filldraw[color=vreuna] (0,0.5) -- ++(130:0.2)--(0,0.51)--cycle;
\end{scope}
}

%muoto lehdelle ilman lehtiruotia
\def\vainlehti#1#2#3{
\begin{scope}[shift={#1}, rotate=#2,scale=#3]
    \filldraw[fill=vlehti,draw=vreuna] (0,1) .. controls (1,0) and (-1,0) .. (0,1);
    \filldraw[color=vreuna] (0,0.35) -- ++(40:0.25)--(0,0.36)--cycle;
    \filldraw[color=vreuna] (0,0.35) -- ++(140:0.25)--(0,0.36)--cycle;
    \filldraw[color=vreuna] (0,0.5) -- ++(50:0.2)--(0,0.51)--cycle;
    \filldraw[color=vreuna] (0,0.5) -- ++(130:0.2)--(0,0.51)--cycle;
\filldraw[color=vreuna] (0,0.75) -- (-0.01,0.25)--(0.01,0.25)--cycle;
\end{scope}
}

\begin{tikzpicture}
%\filldraw[color=epsilon-purple] (-6.5,-6.5) rectangle (6.5,6.5);
\filldraw[color=epsilon-purple] (0,0) circle (6.5cm);
%lehden muodon esikatselu
%\begin{scope}[scale=5]
%\lehti{(0,-2.2)}{90}{1}
%\draw (0,-2.4) node[]{lehden ja v\"ari\"a muotoa voi muuttaa};
%\end{scope}

%\draw (0,0) circle (5cm);%ympyrä hahmottamisen avuksi

\newcommand{\lehva}{
%muoto lehvän varrelle
\filldraw[vreuna,thick] (-55:5.05) arc (-55:40:5)
-- (40:5.0) arc (40:-55:4.9) -- cycle;
\foreach \x [count = \xi] in {30,20,...,-50}{
\lehti{(\x:5)}{\x+50}{1+\xi/30}
\lehti{(\x:5)}{\x-40}{1+\xi/20}
}
\vainlehti{(36:5.0)}{36}{1}
}
\lehva
\begin{scope}[xscale=-1]
\lehva
\end{scope}


\def\myshift#1{\raisebox{-2.5ex}}
\path [->,thick,postaction={decorate,decoration={text along path,text align=center,text color=vteksti,text={|\sffamily\fontsize{35}{35}\selectfont|EPSILON RY}}}] 
(130:4.75) arc (130:50:4.75);
\path [->,thick,postaction={decorate,decoration={text along path,text align=center,text color=vteksti,text={|\sffamily\fontsize{35}{35}\selectfont|SINCE 1970}}}] 
(-150:5.25) arc (-150:-30:5.25);

\draw (0,0) node[,color=vteksti]{\fontsize{175}{175}\selectfont\bf 50};

\end{tikzpicture}


\end{document}