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Fizzy Naples

#efd54f
Notes

Fizzy Naples (#EFD54F) is a true amber with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (50°, 83%, 62%) places it in the highly saturated band at a mid 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#efd54f
RGB
rgb(239, 213, 79)
HSL
hsl(50, 83%, 62%)
HWB
hwb(50 31% 6%)
OKLCH
oklch(87.1% 0.152 98.1)
HSV
hsv(50, 67%, 94%)
LAB
lab(85.25% -5.61 66.82)
LCH
lch(85.25% 67.05 94.80)
CMYK
cmyk(0%, 11%, 67%, 6%)

Etymology

Fizzy
adjective

Imitative-onomatopoeic origin — adjectival suffix -y, evoking the sound of carbonation. As a color modifier, fizzy implies a saturated-and-effervescent-and-bubbly quality, the bright color of Champagne-and-Prosecco effervescent-wine carbonation-bubble-light reflection. Sits at the bright-and-effervescent end of the grid, parallel to bubbly and sparkling in usage.

Naples
noun

Naples yellow (lead-tin yellow) — a lead-tin oxide pigment used in European oil painting from the medieval period through the nineteenth century. The color refers to Naples-yellow pigment in a Vermeer painting: a saturated, slightly red yellow-orange with the matte finish of lead-and-tin-based pigment. Cooler than turmeric.

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

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Harmonies

Accessibility

Color-vision simulation

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.

#efd54f
Original
#e9d03d
Protanopia
#f0d956
Deuteranopia
#ffc6b9
Tritanopia
#d1d1d1
Achromatopsia
WCAG contrast

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.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon White
1.47:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
14.30:1

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