#637E6A

RGB 99, 126, 106

Values

Hex#637E6A

RGB99, 126, 106

HSL136°, 12%, 44%

On White4.45:1

On Black4.72:1

#EFEBEE background

#33151A ink

#637E6A accent

#367D65 support

#AFA6B5 neutral

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Use these colors:

Background: #EFEBEE (background)
Ink: #33151A (ink)
Accent: #637E6A (accent)
Support: #367D65 (support)
Neutral: #AFA6B5 (neutral)

Build a design system around this color.