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Lined Squire Lagoon

#1fb8d1
Notes

Lined Squire Lagoon (#1FB8D1) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (188°, 74%, 47%) 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
#1fb8d1
RGB
rgb(31, 184, 209)
HSL
hsl(188, 74%, 47%)
HWB
hwb(188 12% 18%)
OKLCH
oklch(72.0% 0.121 212.4)
P3
color(display-p3 0.3430 0.7110 0.8068)
HSV
hsv(188, 85%, 82%)
LAB
lab(68.88% -28.43 -23.21)
LCH
lch(68.88% 36.70 219.22)
CMYK
cmyk(85%, 12%, 0%, 18%)

Etymology

Lined
adjective

Old English līne, line / cord — past-participle of line. As a color modifier, lined implies a clear-and-coordinated-and-supported quality where the hue carries the visual register of carefully-lined-and-supported textile-or-print surface. Sits at the crisp-and-finished end of the grid, parallel to trim and coordinated in usage.

Squire
modifier

Old French escuyer, shield-bearer. As a color modifier, squire implies a knight's-attendant-and-page-of-arms quality, the visual register of English-and-French-Squire hand-forged shield-and-stirrup-and-tabard knight's-attendant-and-page-of-arms surfaces under English-and-French-Squire hand-forged shield-and-stirrup ceremonial-court light. Sits at the modifier-and-cultural end of the grid, parallel to knight and page 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

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.

#1fb8d1
Original
#a5b1d2
Protanopia
#8ea1d1
Deuteranopia
#00c2c0
Tritanopia
#999999
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
2.38:1
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
8.84:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##1FB8D1
Display P3
Display P3
color(display-p3 0.3430 0.7110 0.8068)
P3 has subtle headroomOKLCH chroma 0.121

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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