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Crisp Merry Fern

#64af53
Notes

Crisp Merry Fern (#64AF53) 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 (109°, 37%, 51%) 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
#64af53
RGB
rgb(100, 175, 83)
HSL
hsl(109, 37%, 51%)
HWB
hwb(109 33% 31%)
OKLCH
oklch(68.4% 0.148 140.0)
P3
color(display-p3 0.4625 0.6790 0.3687)
HSV
hsv(109, 53%, 69%)
LAB
lab(64.96% -41.28 39.66)
LCH
lch(64.96% 57.25 136.14)
CMYK
cmyk(43%, 0%, 53%, 31%)

Etymology

Crisp
adjective

Latin crispus, curled — drifted in English from the curled hair sense to fresh and clean. As a color modifier, crisp implies saturation combined with optical clarity, with no haze or film between the eye and the surface. Used across the bright and crisp buckets where the hue is fresh-looking. Slightly less assertive than vivid.

Merry
modifier

Old English myrige, pleasant-and-glad. As a color modifier, merry implies a glad-and-bright-and-festive quality, the visual register of Robin-Hood-Merry-Men-and-Maytime-merry hand-glad-and-bright-and-festive Robin-Hood-Merry-Men-and-Maytime-and-village-fair merried-and-glad-and-bright-and-festive surfaces under Robin-Hood-Merry-Men-and-Maytime-and-village-fair Sherwood-Forest-and-Mayday-and-Whitsun greenwood-festival-light. Sits at the modifier-and-mood end of the grid, parallel to jolly and blithe in usage.

Fern
noun

The Polypodiopsida — vascular spore-bearing plants that dominated terrestrial flora during the Carboniferous, when their compressed bodies became most of the world's coal. The color refers to the upper surface of a healthy mid-summer fern frond: a saturated, slightly muted green with the matte finish of mature pinnae. Deeper than moss, cooler than chartreuse, with the patient persistence of a plant family three hundred million years old.

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.

#64af53
Original
#b3a24b
Protanopia
#a99b59
Deuteranopia
#5eaa9a
Tritanopia
#989898
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
2.69:1
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
7.80:1

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
##64AF53
Display P3
Display P3
color(display-p3 0.4625 0.6790 0.3687)
P3 has subtle headroomOKLCH chroma 0.148

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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