#637CA1

RGB 99, 124, 161

Values

Hex#637CA1

RGB99, 124, 161

HSL216°, 25%, 51%

On White4.26:1

On Black4.93:1

#E9E5E2 background

#181910 ink

#637CA1 accent

#48338A support

#AF9797 neutral

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Use these colors:

Background: #E9E5E2 (background)
Ink: #181910 (ink)
Accent: #637CA1 (accent)
Support: #48338A (support)
Neutral: #AF9797 (neutral)

Build a design system around this color.