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Polished Rain Lagoon

#34b3d1
Notes

Polished Rain Lagoon (#34B3D1) is a true cyan 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 (191°, 63%, 51%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#34b3d1
RGB
rgb(52, 179, 209)
HSL
hsl(191, 63%, 51%)
HWB
hwb(191 20% 18%)
OKLCH
oklch(71.2% 0.114 217.6)
HSV
hsv(191, 75%, 82%)
LAB
lab(67.70% -24.03 -24.97)
LCH
lch(67.70% 34.65 226.11)
CMYK
cmyk(75%, 14%, 0%, 18%)

Etymology

Polished
adjective

Latin polīre, to polish — past-participle of polish. As a color modifier, polished implies a clear-and-smooth-and-glossy quality where the hue carries the visual register of buffed-and-burnished smooth-finish surface. Sits at the crisp-and-finished end of the grid, parallel to burnished and gleaming in usage.

Rain
modifier

Old English regn, rain-or-shower. As a color modifier, rain implies a rain-shower-and-wet-and-Atlantic-front quality, the visual register of Atlantic-front-rain-and-monsoon-rain hand-rain-shower-and-wet-and-Atlantic-front Atlantic-front-rain-and-monsoon-rain-and-Lake-District-deluge rain-and-rain-shower-and-wet surfaces under Atlantic-front-rain-and-monsoon-rain-and-Lake-District-deluge Cumbrian-fells-and-Borrowdale-and-Snowdonia Atlantic-rain-light. Sits at the modifier-and-weather end of the grid, parallel to sleet and flurry in usage.

Lagoon
noun

A shallow body of saltwater partially or fully enclosed by a barrier — coral atoll lagoons in the Pacific, Venice's Laguna Veneta, the Florida Keys' backcountry. The color refers to the average reflectance of a calm tropical lagoon at midday: a saturated, slightly muted blue-green with the optical clarity of shallow water over white sand. Brighter than reef, cooler than aquamarine, with the postcard weight of a Pacific atoll seen from above.

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.

#34b3d1
Original
#9faed3
Protanopia
#8a9ed1
Deuteranopia
#00bdbc
Tritanopia
#9a9a9a
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
2.47:1
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
8.51:1

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