#645EBA

RGB 100, 94, 186

Values

Hex#645EBA

RGB100, 94, 186

HSL244°, 40%, 55%

On White5.45:1

On Black3.85:1

#EFEFEB background

#253216 ink

#645EBA accent

#870FAE support

#C2B38E neutral

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Use these colors:

Background: #EFEFEB (background)
Ink: #253216 (ink)
Accent: #645EBA (accent)
Support: #870FAE (support)
Neutral: #C2B38E (neutral)

Build a design system around this color.