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Phosphorescent Sicily

#bbc429
Notes

Phosphorescent Sicily (#BBC429) is a true yellow with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (63°, 65%, 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#bbc429
RGB
rgb(187, 196, 41)
HSL
hsl(63, 65%, 46%)
HWB
hwb(63 16% 23%)
OKLCH
oklch(78.8% 0.165 113.1)
P3
color(display-p3 0.7398 0.7675 0.2905)
HSV
hsv(63, 79%, 77%)
LAB
lab(76.20% -20.73 69.80)
LCH
lch(76.20% 72.81 106.54)
CMYK
cmyk(5%, 0%, 79%, 23%)

Etymology

Phosphorescent
adjective

Greek phōsphóros, light-bringer — adjectival suffix -escent. As a color modifier, phosphorescent implies a saturated-and-cool-glow-after-stimulation quality, the bright cool-green-blue color of Cu-doped-ZnS glow-in-the-dark photoluminescent surfaces. Sits at the bright-and-cool end of the grid, parallel to fluorescent and luminous in usage.

Sicily
noun

The Italian island — and the saturated lemon-yellow of Sicilian limoncello, granita al limone, and the lemon orchards of the Conca d'Oro. Sicily as a color refers to the inside of a Sicilian Femminello lemon cut against a market-stall backdrop: a saturated, slightly cool deep yellow with the optical brightness of high-water-content citrus.

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 explore

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.

#bbc429
Original
#d3ba00
Protanopia
#d3bd38
Deuteranopia
#c8b8a8
Tritanopia
#b7b7b7
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
1.90:1
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
11.04:1

Wide gamut

Display P3 representation

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.

sRGB hex
sRGB hex
##BBC429
Display P3
Display P3
color(display-p3 0.7398 0.7675 0.2905)
P3 has subtle headroomOKLCH chroma 0.165

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.

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