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Honest Sleek Lagoon

#0ab8d3
Notes

Honest Sleek Lagoon (#0AB8D3) 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 (188°, 91%, 43%) 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
#0ab8d3
RGB
rgb(10, 184, 211)
HSL
hsl(188, 91%, 43%)
HWB
hwb(188 4% 17%)
OKLCH
oklch(71.9% 0.125 213.2)
P3
color(display-p3 0.3275 0.7108 0.8140)
HSV
hsv(188, 95%, 83%)
LAB
lab(68.78% -28.77 -24.46)
LCH
lch(68.78% 37.76 220.37)
CMYK
cmyk(95%, 13%, 0%, 17%)

Etymology

Honest
adjective

Latin honestus, honorable — used as a color modifier since the seventeenth century for hues that read as straightforward and unembellished, the working browns and grays of vernacular architecture rather than the polished shades of court fashion. Honest brown, honest gray: moderate saturation combined with optical directness. Sits at the crisp-bucket alongside plain and frank.

Sleek
modifier

Middle Dutch sleeck, smooth. As a color modifier, sleek implies a smooth-and-streamlined quality, the visual register of Mid-Century-Modern-and-Streamline-Moderne-sleek hand-streamlined-and-aerodynamic-and-polished aluminum-and-chrome-and-bakelite Mid-Century-Modern-and-Streamline-Moderne sleek-and-streamlined surfaces under Mid-Century-Modern-and-Streamline-Moderne sleek-and-polished light. Sits at the modifier-and-texture end of the grid, parallel to gloss and shine 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.

#0ab8d3
Original
#a4b1d5
Protanopia
#8da1d3
Deuteranopia
#00c2c0
Tritanopia
#959595
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
2.38:1
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
8.81:1

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
##0AB8D3
Display P3
Display P3
color(display-p3 0.3275 0.7108 0.8140)
P3 has subtle headroomOKLCH chroma 0.125

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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