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Stalwart Bosco

#31a741
Notes

Stalwart Bosco (#31A741) is a true green 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 (128°, 55%, 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#31a741
RGB
rgb(49, 167, 65)
HSL
hsl(128, 55%, 42%)
HWB
hwb(128 19% 35%)
OKLCH
oklch(64.2% 0.176 145.2)
HSV
hsv(128, 71%, 65%)
LAB
lab(60.49% -53.40 42.59)
LCH
lch(60.49% 68.30 141.42)
CMYK
cmyk(71%, 0%, 61%, 35%)

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.

Bosco
noun

The Italian word for forest or woods — used for the deep green of Tuscan bosco (woodland) and the dense forest understory of Apennine national parks. The color refers to a Tuscan bosco canopy in midsummer: a saturated, slightly muted deep green with the matte finish of mature broadleaf canopy.

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

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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.

#31a741
Original
#aa9836
Protanopia
#9c8e49
Deuteranopia
#00a391
Tritanopia
#878787
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
3.12:1
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
6.73:1

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