#66687F

RGB 102, 104, 127

Values

Hex#66687F

RGB102, 104, 127

HSL235°, 11%, 45%

On White5.45:1

On Black3.85:1

#EFEFEC background

#273A18 ink

#66687F accent

#644F82 support

#C0BDB9 neutral

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Use these colors:

Background: #EFEFEC (background)
Ink: #273A18 (ink)
Accent: #66687F (accent)
Support: #644F82 (support)
Neutral: #C0BDB9 (neutral)

Build a design system around this color.