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Invigorating Loch

#4feffa
Notes

Invigorating Loch (#4FEFFA) 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 (184°, 94%, 65%) 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
#4feffa
RGB
rgb(79, 239, 250)
HSL
hsl(184, 94%, 65%)
HWB
hwb(184 31% 2%)
OKLCH
oklch(87.5% 0.130 201.8)
HSV
hsv(184, 68%, 98%)
LAB
lab(87.14% -37.37 -17.41)
LCH
lch(87.14% 41.23 204.98)
CMYK
cmyk(68%, 4%, 0%, 2%)

Etymology

Invigorating
adjective

Latin vigor, vigor — present-participle of invigorate, sharing root with vigil (watchfulness). As a color modifier, invigorating implies a saturated-and-life-giving-and-energizing quality where the hue increases visual-and-physical vitality. Sits at the bright-and-active end of the grid, parallel to stimulating and bracing in usage.

Loch
noun

The Scottish word for lake (from Gaelic loch) — particularly the saturated deep blue of Loch Ness, Loch Lomond, and the highland lochs of the western Highlands. Loch color refers to Loch Lomond at midday: a saturated, slightly cool deep blue with the optical depth of cold-water highland lake.

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.

#4feffa
Original
#dde5fb
Protanopia
#c4d2fb
Deuteranopia
#00f8f2
Tritanopia
#cecece
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
1.39:1
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
15.06:1

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