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In the registryIssued December 7, 2025GCR-2025-2C5971

The registry ID is GCR, the year the color was named, and its hex.

Chathams Blue certificate

Chathams Blue

Registry ID

GCR-2025-2C5971

Issued December 7, 2025

Color data

HEX #2C5971

RGB 44 / 89 / 113

HSL 201° / 44% / 31%

CMYK 61 / 21 / 0 / 56

opencolors.org/certificate/2C5971

Using this color

Aa

White text

7.57:1 · AAA

Aa

Black text

2.77:1 · Fail

Suggested pairings

Complement#72452C
Analogous +30°#2C3772
Analogous −30°#2C7267

Copy for a project

CSS

--chathams-blue: #2C5971;

Tailwind

bg-[#2C5971]

Token

{
  "chathams-blue": {
    "value": "#2C5971"
  }
}