Accessible color combinations All examples shown pass the contrast standards with the exception of small White on black Blue on black blue text on an aubergine background. Never typeset small blue text on White on black Blue on black aubergine. Instead, reserve blue text on aubergine backgrounds only for larger headline typography. White on aubergine Blue on aubergine White on aubergine Blue on aubergine Text 1 on Lt Gray 1 (Active) on Lt. Gray 1 Text 1 on Lt Gray 1 (Active) on Lt. Gray 1 Headline on Lt Gray 2 (Null) on Lt. Gray 2 Headline on Lt Gray 2 (Null) on Lt. Gray 2 Black on blue Black on blue 28 Slack Brand Guidelines Design Elements