
In the mid-20th century, the world of art was shaken by the audacity and vision of Yves Klein, a French artist whose name has become synonymous with a single, vibrant shade of blue. This color, known as International Klein Blue (IKB), is not just a pigment but a profound statement, embodying the artist's exploration of the immaterial and the infinite. Klein’s deep connection to this ultramarine hue transformed it into more than just a color—it became his legacy.
Yves Klein and the Creation of International Klein Blue (IKB)
Yves Klein’s journey to creating International Klein Blue began with his fascination with the color blue. For Klein, blue was the color of the sky, the sea, and the infinite—it was a symbol of the void and a space beyond the physical world. In 1957, Klein, in collaboration with chemist Edouard Adam, developed IKB. This unique shade of blue was achieved by suspending pure ultramarine pigment in a synthetic resin binder, which allowed the color to retain its intensity and luminosity without fading or dulling.
Klein’s use of IKB was groundbreaking. He applied this color to a variety of mediums, from monochrome canvases to sculptures and even performance art. His “Anthropometries” series, where he used the bodies of models as living brushes, coated in IKB, to create imprints on canvas, is one of his most famous works. These pieces are both striking and provocative, challenging traditional notions of painting and the role of the artist.

For Klein, IKB was more than just a color—it was a spiritual tool. He believed that this specific shade of blue could evoke the idea of the infinite and the immaterial. His works invite viewers to contemplate the color not just as a visual experience but as a gateway to the metaphysical. The monochrome canvases, devoid of any distractions, focus solely on the blue, creating an immersive experience that aims to transport the viewer beyond the confines of the physical world.
Klein’s commitment to this single color was so profound that he patented IKB in 1960, solidifying its association with his name. Today, when people see that intense, matte ultramarine, they immediately think of Yves Klein, a testament to the power of a signature color in defining an artist’s legacy.
The Power of a Signature Color
Yves Klein’s use of International Klein Blue is a striking example of how a single color can become inseparable from an artist’s identity. But Klein is not alone in this phenomenon. Throughout history, artists and brands have harnessed the power of a signature color to create a lasting impression.
A signature color goes beyond aesthetics; it becomes a symbol of the creator’s vision and philosophy. For an artist, it can encapsulate their approach to the world, their beliefs, and their emotions. For a brand, a signature color can embody the company’s values and mission, becoming a key part of its identity.

Consider the bright red soles of Christian Louboutin shoes, a feature so distinctive that it has become a hallmark of luxury and style. Or Tiffany & Co.’s robin’s-egg blue, a color that instantly evokes thoughts of elegance and high-end jewelry. These colors are not just marketing tools—they are integral to the stories these brands and artists tell.
The power of a signature color lies in its ability to create an immediate and emotional connection with the audience. It cuts through the noise of a crowded market, leaving a memorable and recognizable mark. In the case of Yves Klein, his choice of blue wasn’t just about creating art; it was about creating a lasting impact, one that continues to resonate long after his passing.
Yves Klein’s International Klein Blue is more than just a color; it’s a legacy, a testament to the power of color in art and identity. Klein’s deep spiritual connection to IKB and his innovative use of it have cemented his place in art history as a master of not only form but also of hue. His work continues to inspire, showing us that sometimes, a single color can be as powerful and enduring as any masterpiece.