diff --git a/README.md b/README.md
index 96f82a8..0386756 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 
 <p align="center">
-  <img src="logo.png" />
+  <img src="jecs_darkmode.svg#gh-dark-mode-only" width=50%/>
+  <img src="jecs_lightmode.svg#gh-light-mode-only" width=50%/>
 </p>
 
 [![License: Apache 2.0](https://img.shields.io/badge/License-Apache-blue.svg?style=for-the-badge)](LICENSE-APACHE)
diff --git a/jecs_darkmode.svg b/jecs_darkmode.svg
new file mode 100644
index 0000000..f64b173
--- /dev/null
+++ b/jecs_darkmode.svg
@@ -0,0 +1,6 @@
+<svg width="47" height="18" viewBox="0 0 47 18" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M5 14C5.8 14 6 13.3333 6 13V4H0V0H6H10V13C10 17 6.66667 18 5 18H0V14H5Z" fill="white"/>
+<path d="M46.5 4V0H39C37.1667 0 33.5 1.1 33.5 5.5C33.5 9.9 36.8333 11 38.5 11H41C41.5 11 42.5 11.3 42.5 12.5C42.5 13.7 41.5 14 41 14H33.5V18H41.5C43.1667 18 46.5 16.9 46.5 12.5C46.5 8.1 43.1667 7 41.5 7H39C38.5 7 37.5 6.7 37.5 5.5C37.5 4.3 38.5 4 39 4H46.5Z" fill="white"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M32.5 0V4H30.5C28.5 4 24.5 5 24.5 9C24.5 11.0835 25.5853 12.3531 26.9078 13.0914L22.4606 14.661C21.2893 13.3156 20.5 11.4775 20.5 9C20.5 1.8 27.1667 0 30.5 0H32.5ZM24.4656 16.3357C26.5037 17.5803 28.8905 18 30.5 18H32.5V14H31.0833L24.4656 16.3357Z" fill="white"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M25.3793 0C24.766 0.241156 24.1568 0.53354 23.571 0.885014C22.1712 1.72492 20.9038 2.91123 20.0606 4.5H11V0H25.3793ZM25.5 4.39421C25.445 4.42876 25.3906 4.46402 25.3368 4.5H25.5V4.39421ZM20.0606 13.5C20.9038 15.0888 22.1712 16.2751 23.571 17.115C24.1568 17.4665 24.766 17.7588 25.3793 18H11V13.5H20.0606ZM19.1854 7C19.0649 7.62348 19 8.28956 19 9C19 9.71044 19.0649 10.3765 19.1854 11H11V7H19.1854Z" fill="white"/>
+</svg>
diff --git a/jecs_lightmode.svg b/jecs_lightmode.svg
new file mode 100644
index 0000000..dbcd08c
--- /dev/null
+++ b/jecs_lightmode.svg
@@ -0,0 +1,6 @@
+<svg width="47" height="18" viewBox="0 0 47 18" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M5 14C5.8 14 6 13.3333 6 13V4H0V0H6H10V13C10 17 6.66667 18 5 18H0V14H5Z" fill="black"/>
+<path d="M46.5 4V0H39C37.1667 0 33.5 1.1 33.5 5.5C33.5 9.9 36.8333 11 38.5 11H41C41.5 11 42.5 11.3 42.5 12.5C42.5 13.7 41.5 14 41 14H33.5V18H41.5C43.1667 18 46.5 16.9 46.5 12.5C46.5 8.1 43.1667 7 41.5 7H39C38.5 7 37.5 6.7 37.5 5.5C37.5 4.3 38.5 4 39 4H46.5Z" fill="black"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M32.5 0V4H30.5C28.5 4 24.5 5 24.5 9C24.5 11.0835 25.5853 12.3531 26.9078 13.0914L22.4606 14.661C21.2893 13.3156 20.5 11.4775 20.5 9C20.5 1.8 27.1667 0 30.5 0H32.5ZM24.4656 16.3357C26.5037 17.5803 28.8905 18 30.5 18H32.5V14H31.0833L24.4656 16.3357Z" fill="black"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M25.3793 0C24.766 0.241156 24.1568 0.53354 23.571 0.885014C22.1712 1.72492 20.9038 2.91123 20.0606 4.5H11V0H25.3793ZM25.5 4.39421C25.445 4.42876 25.3906 4.46402 25.3368 4.5H25.5V4.39421ZM20.0606 13.5C20.9038 15.0888 22.1712 16.2751 23.571 17.115C24.1568 17.4665 24.766 17.7588 25.3793 18H11V13.5H20.0606ZM19.1854 7C19.0649 7.62348 19 8.28956 19 9C19 9.71044 19.0649 10.3765 19.1854 11H11V7H19.1854Z" fill="black"/>
+</svg>
diff --git a/logo.png b/logo_old.png
similarity index 100%
rename from logo.png
rename to logo_old.png