#643F9D

RGB 100, 63, 157

Values

Hex#643F9D

RGB100, 63, 157

HSL264°, 43%, 43%

On White7.66:1

On Black2.74:1

#EBEEE7 background

#26431E ink

#643F9D accent

#E723E5 support

#C1B68B neutral

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Use these colors:

Background: #EBEEE7 (background)
Ink: #26431E (ink)
Accent: #643F9D (accent)
Support: #E723E5 (support)
Neutral: #C1B68B (neutral)

Build a design system around this color.