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Stalwart Zest Forest

#399329
Notes

Stalwart Zest Forest (#399329) 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 (111°, 56%, 37%) 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
#399329
RGB
rgb(57, 147, 41)
HSL
hsl(111, 56%, 37%)
HWB
hwb(111 16% 42%)
OKLCH
oklch(58.7% 0.166 140.9)
P3
color(display-p3 0.3236 0.5689 0.2266)
HSV
hsv(111, 72%, 58%)
LAB
lab(53.92% -46.96 45.89)
LCH
lch(53.92% 65.65 135.66)
CMYK
cmyk(61%, 0%, 72%, 42%)

Etymology

Stalwart
adjective

Old English stǣl-wyrðe, stable-and-worthy. As a color modifier, stalwart implies a saturated-and-loyal-and-firm quality where the hue carries the dependable-and-trustworthy visual presence of a Knight-Templar guard. Sits at the bold-and-firm end of the grid, parallel to steadfast and firm in usage.

Zest
modifier

French zeste, citrus-peel-and-bright-tang. As a color modifier, zest implies a bright-citrus-peel-and-aromatic-oil quality, the visual register of Provençal-and-Sicilian-citrus-zest hand-bright-citrus-peel-and-aromatic-oil Provençal-and-Sicilian-citrus-zest-and-Mediterranean-bergamot zest-and-bright-citrus-peel surfaces under Provençal-and-Sicilian-citrus-zest-and-Mediterranean-bergamot Menton-and-Sicily-and-Calabria-citrus-grove citrus-grove-light. Sits at the modifier-and-flavor end of the grid, parallel to tang and bergamot in usage.

Forest
noun

The dense canopy of a temperate or tropical woodland — oak, beech, pine, eucalyptus, mahogany — wherever leaves close above to filter the light below. Forest green refers to the average reflectance of a healthy mid-summer canopy seen from below: a saturated, slightly muted green with the matte finish of layered chlorophyll. Deeper than fern, cooler than olive, with the ecological weight of a word that has named every wooded biome on Earth.

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.

#399329
Original
#978518
Protanopia
#8c7e33
Deuteranopia
#2c8e7e
Tritanopia
#787878
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
3.90:1
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
5.38:1

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
##399329
Display P3
Display P3
color(display-p3 0.3236 0.5689 0.2266)
P3 has subtle headroomOKLCH chroma 0.166

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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