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Decisive Bottle

#27a139
Notes

Decisive Bottle (#27A139) 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 (129°, 61%, 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#27a139
RGB
rgb(39, 161, 57)
HSL
hsl(129, 61%, 39%)
HWB
hwb(129 15% 37%)
OKLCH
oklch(62.2% 0.178 145.1)
HSV
hsv(129, 76%, 63%)
LAB
lab(58.24% -53.95 43.63)
LCH
lch(58.24% 69.38 141.04)
CMYK
cmyk(76%, 0%, 65%, 37%)

Etymology

Decisive
adjective

From the Latin decidere, to cut off — used as a modifier for colors that read as firm and final. Decisive black, decisive red: the implication is that the color has settled on its position and won't drift. Sits in the bold-bucket corner alongside resolute, with a slightly sharper edge.

Bottle
noun

The traditional dark green of European wine and beer bottles — produced by adding iron oxide to the glass batch to filter UV that would damage the contents. The color refers to a Riesling or Burgundy bottle held against the light: a deep, slightly blue-shifted green with the optical translucency of glass. Darker than spruce, cooler than forest, with the cellar weight of a color that's been protecting wine since the seventeenth century.

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.

#27a139
Original
#a4922d
Protanopia
#968842
Deuteranopia
#009d8b
Tritanopia
#808080
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
3.36:1
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
6.24:1

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