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Tucked Rough Teal

#66e6fd
Notes

Tucked Rough Teal (#66E6FD) is a true cyan 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 (189°, 97%, 70%) 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
#66e6fd
RGB
rgb(102, 230, 253)
HSL
hsl(189, 97%, 70%)
HWB
hwb(189 40% 1%)
OKLCH
oklch(86.2% 0.117 211.2)
HSV
hsv(189, 60%, 99%)
LAB
lab(85.25% -28.82 -21.78)
LCH
lch(85.25% 36.12 217.08)
CMYK
cmyk(60%, 9%, 0%, 1%)

Etymology

Tucked
adjective

Old English tūcian, to torment / pull — past-participle of tuck. As a color modifier, tucked implies a clear-and-fitted-and-arranged quality where the hue carries the visual register of carefully-tucked-and-neatly-fitted shirt-into-trouser dress-attire. Sits at the crisp-and-finished end of the grid, parallel to trim and pressed in usage.

Rough
modifier

Old English rūh, rough. As a color modifier, rough implies an unfinished-and-coarse quality, the visual register of unfinished-stone-and-burlap hand-quarried-and-unprocessed coarse-and-unfinished-textile-and-stone hand-quarried-and-coarse surfaces under hand-quarried-and-unfinished workshop-light. Sits at the modifier-and-texture end of the grid, parallel to hewn and bark in usage.

Teal
noun

Anas crecca, the small dabbling duck whose male in breeding plumage sports a chestnut head crossed by a glossy green-blue stripe. The color refers to that stripe — the iridescent panel just behind the eye: a saturated, slightly muted blue-green with the optical depth of structural color rather than pigment. Cooler than cypress, warmer than cerulean, with the ornithological specificity of a color named for one feather of one bird.

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.

#66e6fd
Original
#d3dffe
Protanopia
#bdcefd
Deuteranopia
#00f0ed
Tritanopia
#cccccc
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
1.47:1
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
14.30:1

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