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Modest Muse Moss

#638f37
Notes

Modest Muse Moss (#638F37) 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 (90°, 44%, 39%) 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
#638f37
RGB
rgb(99, 143, 55)
HSL
hsl(90, 44%, 39%)
HWB
hwb(90 22% 44%)
OKLCH
oklch(59.9% 0.128 131.6)
P3
color(display-p3 0.4254 0.5561 0.2643)
HSV
hsv(90, 62%, 56%)
LAB
lab(54.63% -30.35 41.10)
LCH
lch(54.63% 51.09 126.44)
CMYK
cmyk(31%, 0%, 62%, 44%)

Etymology

Modest
adjective

Latin modestus, moderate — used as a color modifier since the sixteenth century for hues that read as understated and unwilling to claim more visual space than they need. Modest taupe, modest beige: moderate-to-low saturation combined with optical restraint. Sits at the crisp-and-quiet edge of the grid alongside quiet and plain.

Muse
modifier

Latin Musa, goddess-of-inspiration. As a color modifier, muse implies a contemplative-and-inspired-and-poetic quality, the visual register of Helicon-spring-and-Parnassus-muse hand-contemplative-and-inspired-and-poetic Helicon-spring-and-Parnassus-and-Castalian-fount mused-and-contemplative-and-inspired-and-poetic surfaces under Helicon-spring-and-Parnassus-and-Castalian-fount laurel-and-lyre-and-tablet poet's-grove-light. Sits at the modifier-and-mood end of the grid, parallel to mull and brood 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.

#638f37
Original
#95852d
Protanopia
#8f823d
Deuteranopia
#64897c
Tritanopia
#7f7f7f
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
3.81:1
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
5.51:1

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
##638F37
Display P3
Display P3
color(display-p3 0.4254 0.5561 0.2643)
P3 has subtle headroomOKLCH chroma 0.128

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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