diff --git a/packages/ui-themes/src/canvas/high-contrast/colors.js b/packages/ui-themes/src/canvas/high-contrast/colors.js
index <HASH>..<HASH> 100644
--- a/packages/ui-themes/src/canvas/high-contrast/colors.js
+++ b/packages/ui-themes/src/canvas/high-contrast/colors.js
@@ -34,6 +34,7 @@
    licorice: '#2D3B45',
    oxford: '#394B58',
    ash: '#556572',
+   slate: '#556572',
    tiara: '#556572',
    porcelain: '#FFFFFF',
    white: '#FFFFFF'
fix(ui-themes): Make high-contrast theme backwards compatible with < <I>

Change-Id: Ia<I>c<I>cadea9c<I>da<I>c0e6e
Reviewed-on: <URL>