#637A9C

RGB 99, 122, 156

Values

Hex#637A9C

RGB99, 122, 156

HSL216°, 22%, 50%

On White4.38:1

On Black4.79:1

#E9E7E2 background

#333314 ink

#637A9C accent

#8272B6 support

#C0ADA5 neutral

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Use these colors:

Background: #E9E7E2 (background)
Ink: #333314 (ink)
Accent: #637A9C (accent)
Support: #8272B6 (support)
Neutral: #C0ADA5 (neutral)

Build a design system around this color.