Slack
Reference value (#4A154B), not official Slack brand guidelines. Confirm against their materials before shipping in their identity.
The widely cited anchor color for Slack is #4A154B — a deep violet tone in the SaaS & tech sector. It passes AA body text on white at 14:1; on dark grounds it fails on black at 1.5:1 and wants a lighter step there.
Use it as a seed, not a rule: open it in the generator to derive scales, accessible text steps, and themes in the same family, and confirm the current value against Slack's own materials before shipping anything in their identity. Sector neighbors like Microsoft Teams, Zoom, Atlassian make useful comparisons when positioning against competitors.
Sector: SaaS & tech
Values in every format
- HEX
- #4a154b
- RGB
- rgb(74, 21, 75)
- HSL
- hsl(299, 56%, 19%)
- OKLCH
- oklch(0.306 0.108 327.1)
- CMYK
- cmyk(1.3%, 72%, 0%, 70.6%)
Scale derived from the anchor
- 50#fff3fe
- 100#ffe3fe
- 200#f8cff7
- 300#ebb9ea
- 400#d59cd4
- 500#bd81bc
- 600#a568a5
- 700#895189
- 800#6f3d6f
- 900#562c56
- 950 ★#4a154b
Measured contrast
on white14:1 · AA normal ✓
on black1.5:1 · fails AA