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Modest Lurk Lagoon

#19a3a9
Notes

Modest Lurk Lagoon (#19A3A9) is a true cyan with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (183°, 74%, 38%) 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
#19a3a9
RGB
rgb(25, 163, 169)
HSL
hsl(183, 74%, 38%)
HWB
hwb(183 10% 34%)
OKLCH
oklch(65.2% 0.107 199.7)
P3
color(display-p3 0.2996 0.6298 0.6561)
HSV
hsv(183, 85%, 66%)
LAB
lab(61.01% -31.34 -12.91)
LCH
lch(61.01% 33.89 202.39)
CMYK
cmyk(85%, 4%, 0%, 34%)

Etymology

Modest
adjective

Latin modestus, moderate — used as a color modifier since the sixteenth century for hues that read as understated and unwilling to claim more visual space than they need. Modest taupe, modest beige: moderate-to-low saturation combined with optical restraint. Sits at the crisp-and-quiet edge of the grid alongside quiet and plain.

Lurk
modifier

Middle English lurken, to-lie-hidden. As a color modifier, lurk implies a hidden-and-watching-and-shadowed quality, the visual register of forest-edge-and-alley-mouth-lurk hand-hidden-and-watching-and-shadowed forest-edge-and-alley-mouth-and-bridge-undercroft lurked-and-hidden-and-watching-and-shadowed surfaces under forest-edge-and-alley-mouth-and-bridge-undercroft Gothic-novel-and-fairy-tale-and-noir half-light. Sits at the modifier-and-mood end of the grid, parallel to creep and prowl 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.

#19a3a9
Original
#969baa
Protanopia
#838daa
Deuteranopia
#00a9a5
Tritanopia
#868686
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).
AA Largeon White
3.06:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
6.85:1

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
##19A3A9
Display P3
Display P3
color(display-p3 0.2996 0.6298 0.6561)
P3 has subtle headroomOKLCH chroma 0.107

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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