Lambent Sward
Lambent Sward (#4DAC29) is a true green with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (104°, 62%, 42%) 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.
Etymology
Latin lambēns, licking-lightly — present-participle of lambere (to lick). As a color modifier, lambent implies a saturated-and-soft-flickering quality, the bright color of candle-flame-and-firefly gentle-flickering light-emission against the surrounding darkness. Sits at the bright-and-soft end of the grid, parallel to glimmering and flickering in usage.
A grassy turf — the layer of grass-and-roots covering pasture and lawn. Sward in English landscape vocabulary names the saturated green of well-managed grazing land. The color refers to a freshly mown English country lawn: a saturated, slightly cool yellow-green with the matte finish of cropped grass.
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.