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Charged Bottle

#51f7e9
Notes

Charged Bottle (#51F7E9) is a true cyan with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (175°, 91%, 64%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#51f7e9
RGB
rgb(81, 247, 233)
HSL
hsl(175, 91%, 64%)
HWB
hwb(175 32% 3%)
OKLCH
oklch(88.8% 0.136 186.9)
HSV
hsv(175, 67%, 97%)
LAB
lab(88.99% -45.31 -5.75)
LCH
lch(88.99% 45.68 187.24)
CMYK
cmyk(67%, 0%, 6%, 3%)

Etymology

Charged
adjective

Old French chargier, to load — past-participle of charge, sharing root with cargo. As a color modifier, charged implies a saturated-and-electrically-loaded quality where the hue carries visual potential-energy. Sits at the bright-and-active end of the grid, parallel to electrified and energetic in usage.

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

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.

#51f7e9
Original
#eaeae9
Protanopia
#d2d8eb
Deuteranopia
#00fdf2
Tritanopia
#d3d3d3
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).
Failon White
1.33:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
15.83:1

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