Frenetic Kiln Jade
Frenetic Kiln Jade (#3FAA6A) is a true green with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (144°, 46%, 46%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary magenta. For something softer, pull in its analogous neighbors on either side of the wheel.
Etymology
Greek phrenitikós, frenzied — adjectival suffix -ic, derived from phrēn (mind). As a color modifier, frenetic implies a saturated-and-frenzied-and-active quality, the bright color of Hyper-Color-and-Memphis-Group 1980s-design saturated-and-active visual-rhythm. Sits at the bright-and-active end of the grid, parallel to frantic and manic in usage.
Old English cyln, brick-or-pot-firing oven. As a color modifier, kiln implies a fired-and-glazed quality, the visual register of Stoke-on-Trent-and-Jingdezhen hand-fired pottery-and-brickwork high-temperature ceramic-firing surfaces under industrial-pottery-firing Stoke-and-Jingdezhen kiln-yard light. Sits at the modifier-and-place end of the grid, parallel to mill and forge in usage.
Two minerals share the name: nephrite (a calcium-magnesium silicate, dominant in Chinese jade) and jadeite (a sodium-aluminum silicate, dominant in Burmese imperial jade). Both have been carved in China since at least the Neolithic. The color refers to high-quality apple-green jadeite: a saturated, slightly muted yellow-green with the waxy translucency of polished stone. Cooler than apple, warmer than mint, with the millennial cultural weight of yu, the stone of heaven.
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.
Wide gamut
The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.
Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.