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Open Aries Moss

#819d63
Notes

Open Aries Moss (#819D63) is a true lime 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 (89°, 23%, 50%) places it in the muted 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#819d63
RGB
rgb(129, 157, 99)
HSL
hsl(89, 23%, 50%)
HWB
hwb(89 39% 38%)
OKLCH
oklch(66.0% 0.087 129.5)
P3
color(display-p3 0.5275 0.6124 0.4125)
HSV
hsv(89, 37%, 62%)
LAB
lab(61.38% -20.32 27.22)
LCH
lch(61.38% 33.97 126.75)
CMYK
cmyk(18%, 0%, 37%, 38%)

Etymology

Open
adjective

Old English open, unobstructed — used as a color modifier since the eighteenth century for hues that read as airy or uncrowded. Open blue, open green: moderate saturation combined with optical spaciousness, the slight visual breath of a hue that doesn't crowd the surface it covers. Sits at the crisp-bucket center alongside clear.

Aries
modifier

Latin aries, ram-of-the-fleece. As a color modifier, aries implies a ram-and-fire-sign-and-Mars-ruled-cardinal-fire quality, the visual register of Babylonian-ram-and-Greek-Aries hand-ram-and-fire-sign-and-Mars-ruled-cardinal-fire Babylonian-ram-and-Greek-Aries-and-Golden-Fleece aries-and-ram-and-fire-sign surfaces under Babylonian-ram-and-Greek-Aries-and-Golden-Fleece spring-equinox-and-March-and-April fire-sign-light. Sits at the modifier-and-zodiac end of the grid, parallel to taurus and gemini in usage.

Moss
noun

Bryophyta — the nonvascular plants that colonized land 470 million years ago, before vascular plants and far before flowers. The color refers to a thick mat of Hypnum or sphagnum on a temperate forest floor: a soft, slightly yellow-shifted green with the velvet texture of millimeter-scale leaves. Dustier than fern, deeper than lichen, with the slow patience of a plant that lives by absorbing rain through its surface.

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.

#819d63
Original
#a2955f
Protanopia
#9e9466
Deuteranopia
#83988e
Tritanopia
#939393
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
3.03:1
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
6.94:1

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
##819D63
Display P3
Display P3
color(display-p3 0.5275 0.6124 0.4125)
P3 has subtle headroomOKLCH chroma 0.087

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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