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Smooth Cycladic

#3b6a70
Notes

Smooth Cycladic (#3B6A70) is a deep 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 (187°, 31%, 34%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#3b6a70
RGB
rgb(59, 106, 112)
HSL
hsl(187, 31%, 34%)
HWB
hwb(187 23% 56%)
OKLCH
oklch(49.3% 0.052 206.2)
P3
color(display-p3 0.2752 0.4111 0.4350)
HSV
hsv(187, 47%, 44%)
LAB
lab(41.86% -14.27 -8.36)
LCH
lch(41.86% 16.54 210.37)
CMYK
cmyk(47%, 5%, 0%, 56%)

Etymology

Smooth
adjective

Old English smōþ, level, polished — used as a color modifier since the seventeenth century for hues that read as continuous without texture or break. Smooth tan, smooth gray: moderate saturation combined with optical evenness. Sits in the crisp-bucket alongside even.

Cycladic
noun

Of the Cyclades, the Greek archipelago — and the saturated blue of Cycladic-island cupolas, painted blue-and-white church domes, and the deep Mediterranean water of Mykonos, Santorini, Naxos. Cycladic color refers to a Cycladic church dome against the sea: a saturated, slightly cool deep blue with the matte finish of limewash-and-cobalt paint.

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.

#3b6a70
Original
#636770
Protanopia
#5a6070
Deuteranopia
#216e6c
Tritanopia
#606060
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).
AAon White
6.03:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.48:1

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
##3B6A70
Display P3
Display P3
color(display-p3 0.2752 0.4111 0.4350)
Inside sRGBOKLCH chroma 0.052

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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