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Hygienic Mistral Moss

#639044
Notes

Hygienic Mistral Moss (#639044) 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 (96°, 36%, 42%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#639044
RGB
rgb(99, 144, 68)
HSL
hsl(96, 36%, 42%)
HWB
hwb(96 27% 44%)
OKLCH
oklch(60.3% 0.117 134.0)
P3
color(display-p3 0.4264 0.5599 0.3034)
HSV
hsv(96, 53%, 56%)
LAB
lab(55.09% -29.41 35.26)
LCH
lch(55.09% 45.91 129.84)
CMYK
cmyk(31%, 0%, 53%, 44%)

Etymology

Hygienic
adjective

Greek hygieinós, healthful — derived from Hygieia (goddess of health). As a color modifier, hygienic implies a clear-and-medical-clean quality, the crisp color of Mid-Century-Modern clinical-and-hospital interior-architecture surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and sterile in usage.

Mistral
modifier

Provençal mistral, cold-northwest-wind-of-Provence. As a color modifier, mistral implies a cold-Provençal-and-Rhône-Valley-wind quality, the visual register of Provençal-and-Rhône-Valley-mistral hand-cold-Provençal-and-Rhône-Valley-wind Provençal-and-Rhône-Valley-mistral-and-Alpilles mistral-and-cold-Provençal-and-Rhône-Valley-wind surfaces under Provençal-and-Rhône-Valley-mistral-and-Alpilles Avignon-and-Saint-Rémy-and-Camargue cold-Rhône-Valley-wind-light. Sits at the modifier-and-weather end of the grid, parallel to sirocco and gust 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.

#639044
Original
#95863d
Protanopia
#8f8349
Deuteranopia
#638b7f
Tritanopia
#818181
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
3.75:1
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
5.60:1

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
##639044
Display P3
Display P3
color(display-p3 0.4264 0.5599 0.3034)
P3 has subtle headroomOKLCH chroma 0.117

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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