pico.chat/pico.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="-5 -5 10 10">
  <rect x="-5" y="-5" width="10" height="10" fill="royalblue" />
  <polygon points="3,-3 -1,1.3 -1,3" fill="white"/>
  <polygon points="3,-3 -1,1.3  1,2" fill="white"/>
  <polygon points="3,-3 -3,0   -1.5,1" fill="white"/>
</svg>