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Stormy Oxford

#0f2779
Notes

Stormy Oxford (#0F2779) 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°, 78%, 27%) 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
#0f2779
RGB
rgb(15, 39, 121)
HSL
hsl(226, 78%, 27%)
HWB
hwb(226 6% 53%)
OKLCH
oklch(31.8% 0.142 265.6)
P3
color(display-p3 0.0826 0.1507 0.4561)
HSV
hsv(226, 88%, 47%)
LAB
lab(19.77% 24.97 -48.94)
LCH
lch(19.77% 54.94 297.03)
CMYK
cmyk(88%, 68%, 0%, 53%)

Etymology

Stormy
adjective

Old English storm, storm — adjectival suffix -y. As a color modifier, stormy implies a deep-and-turbulent-and-cool-shifted quality, the dark cool-gray of Force-9-gale atmospheric-turbulence sky. Sits at the deep-and-turbulent end of the grid, parallel to thunderous and tempestuous in atmospheric register.

Oxford
noun

The athletic blue of the University of Oxford — adopted alongside Cambridge's lighter blue in the 1820s, when the two universities first began racing crews against each other on the Thames. The color refers to an Oxford-blue rowing jersey: a saturated, slightly muted deep blue with the matte finish of melton wool. Deeper than navy, cooler than royal, with the rivalrous heraldic weight of a color paired with its institutional opposite.

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.

#0f2779
Original
#00357c
Protanopia
#002b77
Deuteranopia
#003d4c
Tritanopia
#282828
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
13.24:1
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
1.59:1

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
##0F2779
Display P3
Display P3
color(display-p3 0.0826 0.1507 0.4561)
P3 has subtle headroomOKLCH chroma 0.142

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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