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Effective Pineapple

#f9e57b
Notes

Effective Pineapple (#F9E57B) is a soft amber with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (50°, 91%, 73%) places it in the highly saturated band at a light 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
#f9e57b
RGB
rgb(249, 229, 123)
HSL
hsl(50, 91%, 73%)
HWB
hwb(50 48% 2%)
OKLCH
oklch(91.7% 0.129 98.9)
HSV
hsv(50, 51%, 98%)
LAB
lab(90.60% -6.54 53.66)
LCH
lch(90.60% 54.06 96.94)
CMYK
cmyk(0%, 8%, 51%, 2%)

Etymology

Effective
adjective

Latin effectīvus, productive — adjectival suffix -ive. As a color modifier, effective implies a clear-and-purpose-achieving quality where the hue carries the visual register of successful-task-completion design-element. Sits at the crisp-and-functional end of the grid, parallel to practical and useful in usage.

Pineapple
noun

Ananas comosus, the cultivated pineapple — domesticated in the Caribbean and South America by the Tupí and a luxury good of seventeenth-century European glasshouses, where a single fruit could cost the equivalent of thousands of dollars. The color refers to a ripe pineapple's flesh: a clean, slightly translucent gold-yellow that's brighter than honey and softer than canary, with the optical brightness of high-water-content tropical fruit.

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.

#f9e57b
Original
#f7e072
Protanopia
#fce780
Deuteranopia
#ffd8cc
Tritanopia
#e2e2e2
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
1.27:1
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
16.52:1

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