Comment by Retr0id

With some dirty hacks, I got it down to 83 bytes:

https://cdn.discordapp.com/attachments/286612533757083648/96...

  00  89 50 4e 47 0d 0a 1a 0a  00 00 00 0d 49 48 44 52  |.PNG........IHDR|
  10  00 00 01 00 00 00 01 00  01 03 00 00 00 66 bc 3a  |.............f�:|
  20  25 00 00 00 03 50 4c 54  45 b5 d0 d0 63 04 16 ea  |%....PLTE���c..�|
  30  00 00 00 1b 49 44 41 54  68 81 ec c1 01 0d 00 00  |....IDATh.��....|
  40  00 c2 a0 f7 4f 6d 0f 07  14 00 00 00 00 00 00 00  |. �Om..........|
  50  c0 b9 01                                          |��.|

Although technically invalid, it still renders fine in Firefox, Chrome, and Safari.

Edit: 87 -> 83 bytes

Edit2: Maybe in a couple of years time, we can use JPEG-XL instead (only 22 bytes, without any hacks!):

  data:image/jxl;base64,/wp/QCQIBgEALABLOEmIDIPCakgSBg==