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Useful Bahamas

#42a6ab
Notes

Useful Bahamas (#42A6AB) is a true cyan with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (183°, 44%, 46%) 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
#42a6ab
RGB
rgb(66, 166, 171)
HSL
hsl(183, 44%, 46%)
HWB
hwb(183 26% 33%)
OKLCH
oklch(66.9% 0.092 199.8)
P3
color(display-p3 0.3695 0.6425 0.6647)
HSV
hsv(183, 61%, 67%)
LAB
lab(62.82% -27.12 -11.24)
LCH
lch(62.82% 29.35 202.52)
CMYK
cmyk(61%, 3%, 0%, 33%)

Etymology

Useful
adjective

Latin ūsus, use — adjectival suffix -ful. As a color modifier, useful implies a clear-and-purpose-serving quality where the hue carries the visual register of helpful-and-supporting design-element. Sits at the crisp-and-functional end of the grid, parallel to practical and serviceable in usage.

Bahamas
noun

The Atlantic archipelago — and the saturated turquoise of Bahamian Pink Sands Beach shallows at Harbour Island and the cyan-blue of Exuma Cays lagoon water. Bahamas color refers to a Bahamian shallow-water lagoon at midday: a saturated, slightly cool bright blue-green with the optical clarity of warm Caribbean water.

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.

#42a6ab
Original
#9b9fab
Protanopia
#8a93ac
Deuteranopia
#00aca7
Tritanopia
#919191
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
2.89:1
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
7.27:1

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
##42A6AB
Display P3
Display P3
color(display-p3 0.3695 0.6425 0.6647)
P3 has subtle headroomOKLCH chroma 0.092

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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