#3F575A

RGB 63, 87, 90

Values

Hex#3F575A

RGB63, 87, 90

HSL187°, 18%, 30%

On White7.71:1

On Black2.72:1

#E8E3E3 background

#36271B ink

#3F575A accent

#59689B support

#C5BABC neutral

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Use these colors:

Background: #E8E3E3 (background)
Ink: #36271B (ink)
Accent: #3F575A (accent)
Support: #59689B (support)
Neutral: #C5BABC (neutral)

Build a design system around this color.