#3F657D

RGB 63, 101, 125

Values

Hex#3F657D

RGB63, 101, 125

HSL203°, 33%, 37%

On White6.23:1

On Black3.37:1

#E5E2E1 background

#272716 ink

#3F657D accent

#4344CB support

#BA9C9F neutral

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Use these colors:

Background: #E5E2E1 (background)
Ink: #272716 (ink)
Accent: #3F657D (accent)
Support: #4344CB (support)
Neutral: #BA9C9F (neutral)

Build a design system around this color.