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Shielded Frond

#42a635
Notes

Shielded Frond (#42A635) 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 (113°, 52%, 43%) 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
#42a635
RGB
rgb(66, 166, 53)
HSL
hsl(113, 52%, 43%)
HWB
hwb(113 21% 35%)
OKLCH
oklch(64.3% 0.177 141.4)
HSV
hsv(113, 68%, 65%)
LAB
lab(60.50% -50.69 48.02)
LCH
lch(60.50% 69.83 136.55)
CMYK
cmyk(60%, 0%, 68%, 35%)

Etymology

Shielded
adjective

Old English scild, shield — past-participle of shield, sharing root with German Schild. As a color modifier, shielded implies a saturated-and-protected-and-defensive quality, the deep-rich color of medieval-knight armorial-shield-and-coat-of-arms heraldic display. Sits at the bold-and-fortified end of the grid, parallel to armored and bastioned.

Frond
noun

The botanical term for a divided leaf — the segmented blade of a fern, palm, or cycad. The color refers to the upper surface of a healthy unfurled fern frond: a soft, slightly yellow-shifted green with the matte chlorophyll finish of new growth. Lighter than fern, cooler than sage, with the unfurling gesture implied by a word that means leaf almost everywhere except where it means primitive plant.

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.

#42a635
Original
#aa9725
Protanopia
#9e8f3f
Deuteranopia
#33a18f
Tritanopia
#898989
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).
AA Largeon White
3.12:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
6.74:1

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