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Frenetic Hail Malachite

#73e18c
Notes

Frenetic Hail Malachite (#73E18C) is a true green with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (134°, 65%, 67%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#73e18c
RGB
rgb(115, 225, 140)
HSL
hsl(134, 65%, 67%)
HWB
hwb(134 45% 12%)
OKLCH
oklch(82.3% 0.157 149.3)
P3
color(display-p3 0.5608 0.8723 0.5805)
HSV
hsv(134, 49%, 88%)
LAB
lab(81.50% -49.60 32.12)
LCH
lch(81.50% 59.09 147.07)
CMYK
cmyk(49%, 0%, 38%, 12%)

Etymology

Frenetic
adjective

Greek phrenitikós, frenzied — adjectival suffix -ic, derived from phrēn (mind). As a color modifier, frenetic implies a saturated-and-frenzied-and-active quality, the bright color of Hyper-Color-and-Memphis-Group 1980s-design saturated-and-active visual-rhythm. Sits at the bright-and-active end of the grid, parallel to frantic and manic in usage.

Hail
modifier

Old English hægl, hail-stones. As a color modifier, hail implies a hail-stone-and-clattering-and-spring-thunderstorm quality, the visual register of prairie-and-summer-thunderhead-hail hand-hail-stone-and-clattering-and-spring-thunderstorm prairie-and-summer-thunderhead-hail-and-Great-Plains hail-and-hail-stone-and-clattering surfaces under prairie-and-summer-thunderhead-hail-and-Great-Plains Tornado-Alley-and-Kansas-Oklahoma-storm-cell prairie-thunderhead-light. Sits at the modifier-and-weather end of the grid, parallel to sleet and flurry in usage.

Malachite
noun

A copper carbonate mineral — Cu₂CO₃(OH)₂ — that crystallizes as concentric green bands in oxidized copper deposits. Mined for ornamental stone since ancient Egypt, ground into pigment for medieval European painting, polished into the malachite columns of the Russian Hermitage. The color refers to a polished cabochon: a saturated, slightly muted green with the high shine of stone and the visible banding of growth rings.

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.

#73e18c
Original
#e3d186
Protanopia
#d3c691
Deuteranopia
#5dddcc
Tritanopia
#c3c3c3
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
1.63:1
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
12.88:1

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
##73E18C
Display P3
Display P3
color(display-p3 0.5608 0.8723 0.5805)
P3 has subtle headroomOKLCH chroma 0.157

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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