#637E7B

RGB 99, 126, 123

Values

Hex#637E7B

RGB99, 126, 123

HSL173°, 12%, 44%

On White4.37:1

On Black4.8:1

#F0EFEF background

#281A10 ink

#637E7B accent

#5594AA support

#C7BCC1 neutral

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Use these colors:

Background: #F0EFEF (background)
Ink: #281A10 (ink)
Accent: #637E7B (accent)
Support: #5594AA (support)
Neutral: #C7BCC1 (neutral)

Build a design system around this color.