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Straightforward Hun Lagoon

#3fbcdb
Notes

Straightforward Hun Lagoon (#3FBCDB) 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 (192°, 68%, 55%) 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
#3fbcdb
RGB
rgb(63, 188, 219)
HSL
hsl(192, 68%, 55%)
HWB
hwb(192 25% 14%)
OKLCH
oklch(74.0% 0.115 218.0)
P3
color(display-p3 0.3961 0.7273 0.8446)
HSV
hsv(192, 71%, 86%)
LAB
lab(70.96% -24.08 -25.43)
LCH
lch(70.96% 35.03 226.57)
CMYK
cmyk(71%, 14%, 0%, 14%)

Etymology

Straightforward
adjective

English compound straight + forward — sharing root with German geradeaus. As a color modifier, straightforward implies a clear-and-direct-and-unencumbered quality where the hue carries the visual register of clear-aim-and-uncomplicated character. Sits at the crisp-and-honest end of the grid, parallel to candid and direct in usage.

Hun
modifier

Greek Hunni, Huns. As a color modifier, hun implies a Central-Asian-steppe-migration quality, the visual register of Attila-the-Hun late-Roman-period Central-Asian steppe-migration-and-mounted-archery hand-built warrior-camp surfaces under Central-Asian-steppe-and-Pannonian-plain Hunnic-Age horse-archer light. Sits at the modifier-and-cultural end of the grid, parallel to vandal and goth 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.

#3fbcdb
Original
#a8b7dd
Protanopia
#92a7db
Deuteranopia
#00c7c6
Tritanopia
#a4a4a4
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
2.23:1
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
9.43:1

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
##3FBCDB
Display P3
Display P3
color(display-p3 0.3961 0.7273 0.8446)
P3 has subtle headroomOKLCH chroma 0.115

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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