#428E9A

RGB 66, 142, 154

Values

Hex#428E9A

RGB66, 142, 154

HSL188°, 40%, 43%

On White3.77:1

On Black5.57:1

#F3F2F1 background

#201A13 ink

#428E9A accent

#255FA2 support

#BD93A6 neutral

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Use these colors:

Background: #F3F2F1 (background)
Ink: #201A13 (ink)
Accent: #428E9A (accent)
Support: #255FA2 (support)
Neutral: #BD93A6 (neutral)

Build a design system around this color.