#638FA1

RGB 99, 143, 161

Values

Hex#638FA1

RGB99, 143, 161

HSL197°, 25%, 51%

On White3.52:1

On Black5.97:1

#ECEAEA background

#201F18 ink

#638FA1 accent

#4B5191 support

#AFA1A2 neutral

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Use these colors:

Background: #ECEAEA (background)
Ink: #201F18 (ink)
Accent: #638FA1 (accent)
Support: #4B5191 (support)
Neutral: #AFA1A2 (neutral)

Build a design system around this color.