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Sure Riviera

#c66f49
Notes

Sure Riviera (#C66F49) is a true orange with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (18°, 52%, 53%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#c66f49
RGB
rgb(198, 111, 73)
HSL
hsl(18, 52%, 53%)
HWB
hwb(18 29% 22%)
OKLCH
oklch(63.2% 0.122 43.7)
P3
color(display-p3 0.7305 0.4522 0.3168)
HSV
hsv(18, 63%, 78%)
LAB
lab(55.95% 30.99 35.91)
LCH
lch(55.95% 47.43 49.20)
CMYK
cmyk(0%, 44%, 63%, 22%)

Etymology

Sure
adjective

Old French seur, certain — used as a color modifier since the medieval period for hues that read as confident and stable. Sure red, sure blue: moderate saturation combined with optical commitment. Sits at the crisp-bucket center alongside steady and true.

Riviera
noun

The Mediterranean coast — particularly the Italian Riviera between Genoa and the French border, where stucco facades are limewashed in the warm orange-tan of terra di Genova. Riviera as a color refers to the limewashed walls of a Camogli or Cinque Terre village: a soft, slightly muted warm orange-tan with the matte finish of weathered limewash.

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.

#c66f49
Original
#867a45
Protanopia
#9b8d48
Deuteranopia
#d85f66
Tritanopia
#7f7f7f
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).
AA Largeon White
3.64:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
5.77:1

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
##C66F49
Display P3
Display P3
color(display-p3 0.7305 0.4522 0.3168)
P3 has subtle headroomOKLCH chroma 0.122

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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