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Stern Sigh Ultramarine

#093c8b
Notes

Stern Sigh Ultramarine (#093C8B) 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 (216°, 88%, 29%) 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
#093c8b
RGB
rgb(9, 60, 139)
HSL
hsl(216, 88%, 29%)
HWB
hwb(216 4% 45%)
OKLCH
oklch(37.8% 0.141 259.9)
P3
color(display-p3 0.1016 0.2315 0.5255)
HSV
hsv(216, 94%, 55%)
LAB
lab(27.17% 17.22 -48.17)
LCH
lch(27.17% 51.16 289.67)
CMYK
cmyk(94%, 57%, 0%, 45%)

Etymology

Stern
adjective

Old English styrne, strict / firm — sharing root with stark. As a color modifier, stern implies a deep-and-uncompromising quality, the dark formal-Calvinist plain-textile color of stripped-down Protestant-and-Quaker tradition. Sits at the deep-and-formal end of the grid, parallel to austere and severe in tone.

Sigh
modifier

Middle English sighen, to-breathe-out-audibly. As a color modifier, sigh implies a breathed-out-and-released-and-wistful quality, the visual register of Romantic-poet-and-pining-lover-sigh hand-breathed-out-and-released-and-pining Romantic-poet-and-pining-lover-and-bedside-vigil sighed-and-released-and-breathed-out surfaces under Romantic-poet-and-pining-lover candle-lit-and-bedside-vigil window-and-balcony-light. Sits at the modifier-and-mood end of the grid, parallel to yearn and brood in usage.

Ultramarine
noun

The pigment ground from lapis lazuli — the Afghan mineral imported through Venice in the late Middle Ages, more expensive by weight than gold during the Renaissance. The color refers to a freshly mixed ultramarine pigment in linseed oil: a saturated, slightly violet-shifted deep blue with the matte finish of micron-ground rock. Deeper than cobalt, cooler than royal, with the art-historical weight of the blue Vermeer reserved for Mary's robe.

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.

#093c8b
Original
#00468e
Protanopia
#003b89
Deuteranopia
#00505d
Tritanopia
#373737
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
10.34:1
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
2.03:1

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
##093C8B
Display P3
Display P3
color(display-p3 0.1016 0.2315 0.5255)
P3 has subtle headroomOKLCH chroma 0.141

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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