One-color use The one-color logo should be used only on photographs and color backgrounds within the Slack color palette. The one-color logo should only be used in black and white colorways. If using an aubergine background, we strongly prefer to use the full-color logo. However, if design limitations conflict with this, then the logo should appear in white on aubergine. 23 Slack Brand Guidelines Design Elements
![Slack Brand Book - Page 21](/cdn-cgi/image/width=600,quality=80,format=webp/https://cdn.relayto.com/images_originals/648b12d63c216.jpeg)