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Eclipsed Cobalto

#0f2b89
Notes

Eclipsed Cobalto (#0F2B89) is a deep blue 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 (226°, 80%, 30%) 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
#0f2b89
RGB
rgb(15, 43, 137)
HSL
hsl(226, 80%, 30%)
HWB
hwb(226 6% 46%)
OKLCH
oklch(34.2% 0.159 265.2)
P3
color(display-p3 0.0877 0.1661 0.5165)
HSV
hsv(226, 89%, 54%)
LAB
lab(22.43% 28.64 -54.68)
LCH
lch(22.43% 61.73 297.64)
CMYK
cmyk(89%, 69%, 0%, 46%)

Etymology

Eclipsed
adjective

Greek ékleipsis, abandonment — past-participle of eclipse. As a color modifier, eclipsed implies the deep occulting darkness of a celestial-body-blocked light-source, where umbral-and-penumbral shadows fall on the hue. Sits at the deep-and-cool end of the grid, parallel to occluded with astronomical connotation.

Cobalto
noun

The Italian word for cobalt — used for the saturated deep blue of cobalto-glaze on Tuscan and Venetian Renaissance ceramics. The color refers to a cobalto-glazed Tuscan piatto: a saturated, slightly cool deep blue with the high gloss of cobalt-glazed porcelain. The Italian cousin of cobalt.

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.

#0f2b89
Original
#003b8c
Protanopia
#003087
Deuteranopia
#004556
Tritanopia
#2c2c2c
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
12.16:1
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
1.73:1

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
##0F2B89
Display P3
Display P3
color(display-p3 0.0877 0.1661 0.5165)
P3 has subtle headroomOKLCH chroma 0.159

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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