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Sparking Fiddlehead

#39ac34
Notes

Sparking Fiddlehead (#39AC34) 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 (118°, 54%, 44%) 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.

HEX
#39ac34
RGB
rgb(57, 172, 52)
HSL
hsl(118, 54%, 44%)
HWB
hwb(118 20% 33%)
OKLCH
oklch(65.6% 0.188 142.5)
HSV
hsv(118, 70%, 67%)
LAB
lab(62.19% -54.97 50.14)
LCH
lch(62.19% 74.41 137.63)
CMYK
cmyk(67%, 0%, 70%, 33%)

Etymology

Sparking
adjective

Old English spearca, spark — present-participle of spark. As a color modifier, sparking implies a saturated-and-electrical-emission quality, the bright color of welding-arc-and-Tesla-coil high-voltage spark-discharge emission. Sits at the bright-and-electric end of the grid, parallel to flashing and coruscating in usage.

Fiddlehead
noun

The tightly coiled emerging frond of any fern — particularly the edible fiddleheads of Matteuccia struthiopteris (ostrich fern), eaten as a foraged spring delicacy in New England. Fiddlehead color refers to a fresh-emerged fern fiddlehead: a saturated, slightly cool yellow-green with the satin finish of curled new growth.

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.

#39ac34
Original
#b09c22
Protanopia
#a29340
Deuteranopia
#1fa794
Tritanopia
#8b8b8b
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
2.95:1
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
7.12:1

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