The Ultimate Guide to Honda Si Blue Paint Code: Find Your Perfect Hue

Jeffrey Jun 02, 2026
a blue car parked in front of a building
a blue car parked in front of a building

Finding the exact hue for your Honda Si often starts with a simple, yet crucial, question: what is the factory blue paint code? For owners and enthusiasts, matching the specific shade of blue applied at the factory is essential for touch-ups, complete resprays, or verifying the authenticity of a used vehicle. This specific code acts as a unique identifier, bridging the gap between a general color name and the precise mixture of pigments used by Honda's manufacturing process.

a blue car parked in front of a building
a blue car parked in front of a building

Decoding Honda's Color Nomenclature

Honda Civic Type R
Honda Civic Type R

Honda, like most major manufacturers, assigns cryptic codes to its palette of colors. These codes are not arbitrary; they follow a logical system that often denotes the brand, finish type, and sometimes even the vehicle line. When searching for a Si-specific blue, you are looking for a designation that is typically rooted in the broader Honda parts and paint database. Understanding this structure is the first step in moving from a generic "blue" to the precise formula that makes your Si stand out.

The Specific Code for Si Blue

a blue car parked in a parking lot
a blue car parked in a parking lot

While trim levels and model years can influence the available options, the classic blue associated with the Civic Si platform is frequently identified as code GY5. This designation is widely recognized in the automotive painting community and parts aftermarket as the standard deep, metallic blue for Si trims during its peak popularity. It is a rich, vibrant blue that shifts subtly in different lighting conditions, a characteristic beloved by fans of the model.

Common Trim DesignationPaint CodeFinish Type
Civic Si (特定年代)GY5Metallic
Civic Si (其他年代)B85PSolid
a blue car parked in a parking lot
a blue car parked in a parking lot

Variations and Year-Specific Codes

It is important to note that the automotive industry rarely stands still, and paint codes are subject to change. The GY5 code represents a specific era and formulation. For other model years or specific market versions, you might encounter variations such as B85P or other similar identifiers. These codes correspond to slight modifications in the pigment or base, often dictated by regional regulations or evolving brand standards. Always cross-reference your specific vehicle identification number (VIN) for the most accurate data.

Why Code Accuracy Matters

a blue car parked on the side of a road next to some grass and trees
a blue car parked on the side of a road next to some grass and trees

Using the wrong paint code can lead to frustrating results, even with the same color name. Two paints labeled "blue" can have completely different underlying tones, gloss levels, or durability characteristics. By sourcing the exact code for your Honda Si, you ensure compatibility with the clear coat, proper mixing ratios, and ultimately, a seamless blend that restores your car's appearance to its original glory. This precision is the difference between a noticeable repair and an invisible one.

Whether you are sourcing paint for a DIY project or verifying the color for a potential purchase, confirming the code is the most practical step. Resources such as dealership parts departments or reputable automotive forums can help you lock down the exact number for your specific year and trim. Armed with the correct information, you can proceed with confidence, ensuring your Honda Si retains its iconic blue presence for years to come.

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