Brooding Adriatic
Brooding Adriatic (#04407B) is a deep azure with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (210°, 94%, 25%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary orange. For something softer, pull in its analogous neighbors on either side of the wheel.
Etymology
The adjectival use of brood in the sense of to dwell on — a gerund-as-modifier that describes mood more than reflectance. Used as a color word principally in art criticism since the late nineteenth century: brooding sky, brooding portrait. In the engine's adjective grid, brooding sits in the dark-and-quiet end where the hue is present but reads as withholding rather than presenting itself.
The arm of the Mediterranean between the Italian peninsula and the Balkans — Venice's lagoon at one end, the Strait of Otranto at the other. The color refers to the average mid-summer reflectance of Adriatic water near the Croatian coast: a saturated, slightly green-shifted blue with the optical complexity of a sea where karst limestone bottoms scatter light back upward. Brighter than mediterranean, cooler than aegean.
Closest matches
The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.
Variations
Click any swatch to exploreHarmonies
Accessibility
How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.
The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.