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Smothering Capri

#05378b
Notes

Smothering Capri (#05378B) is a deep azure with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (218°, 93%, 28%) places it in the highly saturated band at a dark 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#05378b
RGB
rgb(5, 55, 139)
HSL
hsl(218, 93%, 28%)
HWB
hwb(218 2% 45%)
OKLCH
oklch(36.6% 0.149 260.8)
HSV
hsv(218, 96%, 55%)
LAB
lab(25.65% 20.53 -50.65)
LCH
lch(25.65% 54.66 292.07)
CMYK
cmyk(96%, 60%, 0%, 45%)

Etymology

Smothering
adjective

Old English smorian, to suffocate — present-participle of smother. As a color modifier, smothering implies a deep-and-overwhelming-and-pressing quality where the hue is dominated by an enveloping darkness. Sits at the deep-and-overwhelming end of the grid, parallel to suffocating with kinetic register.

Capri
noun

The Italian island in the Bay of Naples whose Blue Grotto — a sea cave where light enters through an underwater opening — turns the water inside an electric, otherworldly blue. The color refers to the water of the Grotta Azzurra: a saturated, slightly green-shifted electric blue with the optical clarity of light filtered through twenty meters of seawater. Brighter than aqua, more chromatic than turquoise, with the tourist-destination association of a single specific cave.

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

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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.

#05378b
Original
#00438e
Protanopia
#003789
Deuteranopia
#004d5b
Tritanopia
#323232
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).
AAAon White
10.90:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
1.93:1

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