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Salubrious Bergamot Lagoon

#21b4d3
Notes

Salubrious Bergamot Lagoon (#21B4D3) 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°, 73%, 48%) 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
#21b4d3
RGB
rgb(33, 180, 211)
HSL
hsl(190, 73%, 48%)
HWB
hwb(190 13% 17%)
OKLCH
oklch(71.2% 0.121 216.9)
P3
color(display-p3 0.3381 0.6956 0.8132)
HSV
hsv(190, 84%, 83%)
LAB
lab(67.77% -25.64 -25.99)
LCH
lch(67.77% 36.51 225.38)
CMYK
cmyk(84%, 15%, 0%, 17%)

Etymology

Salubrious
adjective

Latin salūbris, healthful — adjectival suffix -ous. As a color modifier, salubrious implies a clear-and-healthful-and-fresh quality, the crisp color of Alpine-and-Sea-air health-resort and Mediterranean-coast spa-and-thalassotherapy outdoor environment. Sits at the crisp-and-wholesome end of the grid, parallel to healthful and bracing in usage.

Bergamot
modifier

Italian bergamotta, Calabrian-citrus-and-Earl-Grey-tea. As a color modifier, bergamot implies a Calabrian-citrus-and-Earl-Grey-tea quality, the visual register of Calabrian-bergamot-and-Earl-Grey-tea hand-Calabrian-citrus-and-Earl-Grey-tea Calabrian-bergamot-and-Earl-Grey-tea-and-Reggio-di-Calabria bergamot-and-Calabrian-citrus surfaces under Calabrian-bergamot-and-Earl-Grey-tea-and-Reggio-di-Calabria Reggio-di-Calabria-and-Twinings-Earl-Grey Calabrian-and-tea-light. Sits at the modifier-and-flavor end of the grid, parallel to zest and balm 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.

#21b4d3
Original
#a0aed5
Protanopia
#899ed3
Deuteranopia
#00bfbe
Tritanopia
#979797
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
2.46:1
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
8.53:1

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
##21B4D3
Display P3
Display P3
color(display-p3 0.3381 0.6956 0.8132)
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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