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Frank Helen Lagoon

#83c6bf
Notes

Frank Helen Lagoon (#83C6BF) is a true teal with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (174°, 37%, 65%) 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
#83c6bf
RGB
rgb(131, 198, 191)
HSL
hsl(174, 37%, 65%)
HWB
hwb(174 51% 22%)
OKLCH
oklch(78.0% 0.069 187.6)
P3
color(display-p3 0.5721 0.7696 0.7478)
HSV
hsv(174, 34%, 78%)
LAB
lab(75.43% -22.71 -3.24)
LCH
lch(75.43% 22.94 188.12)
CMYK
cmyk(34%, 0%, 4%, 22%)

Etymology

Frank
adjective

From the Old French franc, free, sincere — used as a color modifier since the seventeenth century for hues that read as direct and unhedged. Frank red, frank brown: moderate-to-high saturation combined with optical directness. Sits at the crisp-bucket alongside direct and honest.

Helen
modifier

Greek Ἑλένη, Helen-of-Troy. As a color modifier, helen implies a Helen-of-Troy-and-fairest-face quality, the visual register of Helen-of-Troy-and-Tyndareus-Sparta hand-Helen-of-Troy-and-fairest-face Helen-of-Troy-and-Tyndareus-Sparta-and-Iliad-Homeric helen-and-Helen-of-Troy-and-fairest-face surfaces under Helen-of-Troy-and-Tyndareus-Sparta-and-Iliad-Homeric Mycenaean-and-Trojan Bronze-Age-Aegean-light. Sits at the modifier-and-myth end of the grid, parallel to eros and hera 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.

#83c6bf
Original
#bfbfbf
Protanopia
#b3b6c0
Deuteranopia
#6bc9c4
Tritanopia
#b7b7b7
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
1.95:1
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
10.80:1

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
##83C6BF
Display P3
Display P3
color(display-p3 0.5721 0.7696 0.7478)
Inside sRGBOKLCH chroma 0.069

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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