#638A9C

RGB 99, 138, 156

Values

Hex#638A9C

RGB99, 138, 156

HSL199°, 22%, 50%

On White3.72:1

On Black5.65:1

#E5E3E1 background

#313016 ink

#638A9C accent

#32468F support

#CEB1B1 neutral

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Use these colors:

Background: #E5E3E1 (background)
Ink: #313016 (ink)
Accent: #638A9C (accent)
Support: #32468F (support)
Neutral: #CEB1B1 (neutral)

Build a design system around this color.