International Klein Blue

International Klein Blue is a pure, intense ultramarine that appears to vibrate with energy. Its high saturation creates a luminous effect, making the color feel as if it’s lit from within.

It’s a cool-toned blue with strong violet undertones that give it exceptional depth. The original pigment’s matte, powdery texture absorbs light, which further amplifies its perceived intensity.

International Klein Blue is more than just a pigment; it's an idea. Developed by artist Yves Klein, the color #002FA7 was his signature, intended to represent pure, unadulterated space and the immaterial. It carries a sense of the infinite and the spiritual, a concept Klein pursued by patenting the color to preserve its conceptual purity.

Psychologically, this intense ultramarine evokes a profound sense of depth and tranquility. Its vibrancy commands attention while simultaneously suggesting a calm, expansive void, much like the deep sea or a twilight sky. For designers, it offers a tool to create focus and communicate a feeling of boundless possibility.

International Klein Blue (#002FA7) works powerfully as an accent. Use it for primary call-to-actions, interactive elements, or illustrations to guide the user's eye. It pairs cleanly with neutrals like white and gray for a sharp, modern feel, or can be set against a warm yellow for a striking split-complementary palette.

While not widely adopted, brands like Breaker, Kraken, Cleo, and Affirm use similar electric blues. Its relative rarity in digital products presents an opportunity for differentiation, helping a brand stand out and be instantly recognizable.

Use the tools below to explore curated palettes, test color contrast for accessibility, and preview International Klein Blue in real UI components from top brands.

To apply International Klein Blue in your digital work, you'll most often use its hexadecimal code, #002FA7. This code is a direct instruction for screens to render the specific, vibrant blue that defines the color.

While hex is standard for the web, different design contexts require other color models. The code #002FA7 can be translated into formats like RGB (Red, Green, Blue) for digital displays or CMYK (Cyan, Magenta, Yellow, Key/Black) for accurate color in print media.

To make things simple, we've converted #002FA7 into a range of popular formats. You can find and copy the exact values you need for your project below.