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Bold Smeraldo

#217128
Notes

Bold Smeraldo (#217128) is a deep 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 (125°, 55%, 29%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#217128
RGB
rgb(33, 113, 40)
HSL
hsl(125, 55%, 29%)
HWB
hwb(125 13% 56%)
OKLCH
oklch(48.4% 0.132 144.5)
HSV
hsv(125, 71%, 44%)
LAB
lab(41.67% -39.84 32.86)
LCH
lch(41.67% 51.64 140.48)
CMYK
cmyk(71%, 0%, 65%, 56%)

Etymology

Bold
adjective

Old English beald, brave, courageous — a quality word that crossed over to color in the late seventeenth century. Bold describes a color that asserts itself: high saturation combined with mid lightness, where the hue presents itself without compromise. Sits at the center of the bold-bucket grid, near strong and rich. Closer to a presence word than a pigment word.

Smeraldo
noun

The Italian word for emerald — used in Renaissance jewelry vocabulary and the Costa Smeralda (emerald coast) of northern Sardinia. The color refers to a faceted Italian-cut Colombian emerald: a saturated, slightly cool deep green with the gem's signature internal warmth. The Italian cousin of emerald.

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.

#217128
Original
#736620
Protanopia
#6a602e
Deuteranopia
#096e61
Tritanopia
#5b5b5b
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).
AAon White
6.07:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.46:1

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