International Klein Blue#002FA7, a cool vivid blue

International Klein Blue in RGB, HSL, OKLCH & more

Ready to ship: every line pastes straight into your codebase, and the whole file copies at once.

ART is Rhapsody's perceptual model. How ART works

What kind of blue is International Klein Blue?

Every color has a place in the standard vocabulary. This is International Klein Blue's, measured rather than asserted.

International Klein Blue's Munsell numbers: hue 6.7PB, value 2.6 (how light), chroma 16.2 (how vivid). That places it in ISCC-NBS block vivid blue, one of 267 named ranges the standard sorts every color into. Chroma 16.2 is about as saturated as named colors get. Nothing muted shares this block.

It reaches 73% of the way to the edge of your screen's gamut (the palette a screen can actually show) for this hue. Strong, with some headroom left before the screen runs out.

Munsell coordinates and block from the ISCC-NBS system, computed by Rhapsody's own renotation inversion.

Shades of International Klein Blue, lighter and darker

For hover states, washed backgrounds, and dark surfaces that still read as #002FA7. 13 steps, spaced evenly by eye, with the color itself sitting at its natural depth, international-klein-blue-800.

Tints (light surfaces; dark text passes on every one)

Midtones (the color at full strength, for brand & accent work)

Shades (dark surfaces; light text passes on every one)

Is International Klein Blue accessible? Contrast with white & black

Strong contrast makes your work readable by everyone, and meets the WCAG standard accessibility law points at. AA is the floor; AAA is the tier worth aiming for in body text. White text on #002FA7 clears WCAG AAA. Every strip below is one surface, and the marks are the steps that reach AAA on it.

Rows are text, columns are background · 70 of 210 pairings reach WCAG 2.2 AAA, shown here.

International Klein Blue in CMYK: one value for files, one per press

This color shifts further than a press run can hold, so expect a visible difference. The pairs below show where each standard lands.

In CMYK, #002FA7 is C100 · M71.9 · Y0 · K34.5. That is the value design tools and file formats use when no press is involved.

On press (what each standard prints)

Press values computed through the ICC characterization data each standard proofs against. Each CMYK above is the closest that standard can get.

Colors similar to International Klein Blue

Here are other colors similar to International Klein Blue along with accessible text pairings and whether or not they're print-safe. Explore The Blues

Colors that go with International Klein Blue

The complementary color, straight across the wheel, is a warm medium amber #D9A95B. Rhapsody's pick is the split complement, just to one side of it, a livelier pair.

The accent is for the moments that need attention, the harmony for the ones that need calm; the neutral carries the text and surfaces in between.

Take International Klein Blue with you

The work on this page doesn't stay here. Save a card and the color arrives in your file, your deck or your board already decided.