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Stamped Tabard Lagoon

#15bcdd
Notes

Stamped Tabard Lagoon (#15BCDD) 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 (190°, 83%, 47%) 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
#15bcdd
RGB
rgb(21, 188, 221)
HSL
hsl(190, 83%, 47%)
HWB
hwb(190 8% 13%)
OKLCH
oklch(73.4% 0.128 216.8)
P3
color(display-p3 0.3414 0.7264 0.8515)
HSV
hsv(190, 90%, 87%)
LAB
lab(70.41% -27.06 -27.42)
LCH
lch(70.41% 38.52 225.38)
CMYK
cmyk(90%, 15%, 0%, 13%)

Etymology

Stamped
adjective

Old English stempan, to stamp — past-participle of stamp. As a color modifier, stamped implies a clear-and-impressed-and-repeating quality, the crisp color of William-Morris-and-Liberty-of-London block-printed-textile carefully-impressed pattern. Sits at the crisp-and-printed end of the grid, parallel to printed and engraved in usage.

Tabard
modifier

Old French tabart, herald's-or-knight's-surcoat. As a color modifier, tabard implies a herald's-tabard-and-knight's-surcoat quality, the visual register of medieval-herald's-and-knight's-tabard hand-herald's-tabard-and-knight's-surcoat medieval-herald's-and-knight's-tabard-and-College-of-Arms tabard-and-herald's-tabard surfaces under medieval-herald's-and-knight's-tabard-and-College-of-Arms College-of-Arms-and-Bayeux-Tapestry heraldic-tabard-light. Sits at the modifier-and-textile end of the grid, parallel to kilt and cape 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.

#15bcdd
Original
#a6b6df
Protanopia
#8ea5dd
Deuteranopia
#00c7c6
Tritanopia
#9b9b9b
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
2.27:1
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
9.27:1

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
##15BCDD
Display P3
Display P3
color(display-p3 0.3414 0.7264 0.8515)
P3 has subtle headroomOKLCH chroma 0.128

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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