#638C87

RGB 99, 140, 135

Values

Hex#638C87

RGB99, 140, 135

HSL173°, 17%, 47%

On White3.73:1

On Black5.63:1

#F5F5F4 background

#41372A ink

#638C87 accent

#3E677E support

#AC91A0 neutral

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Use these colors:

Background: #F5F5F4 (background)
Ink: #41372A (ink)
Accent: #638C87 (accent)
Support: #3E677E (support)
Neutral: #AC91A0 (neutral)

Build a design system around this color.