#66639C

RGB 102, 99, 156

Values

Hex#66639C

RGB102, 99, 156

HSL243°, 22%, 50%

On White5.48:1

On Black3.83:1

#F3F3F1 background

#2D372A ink

#66639C accent

#825EB5 support

#B4AC97 neutral

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Use these colors:

Background: #F3F3F1 (background)
Ink: #2D372A (ink)
Accent: #66639C (accent)
Support: #825EB5 (support)
Neutral: #B4AC97 (neutral)

Build a design system around this color.