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Brooding Hoar Ultramarine

#021537
Notes

Brooding Hoar Ultramarine (#021537) 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%, 11%) 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
#021537
RGB
rgb(2, 21, 55)
HSL
hsl(218, 93%, 11%)
HWB
hwb(218 1% 78%)
OKLCH
oklch(20.5% 0.072 259.3)
P3
color(display-p3 0.0237 0.0806 0.2070)
HSV
hsv(218, 96%, 22%)
LAB
lab(7.45% 7.83 -24.47)
LCH
lch(7.45% 25.69 287.75)
CMYK
cmyk(96%, 62%, 0%, 78%)

Etymology

Brooding
adjective

The adjectival use of brood in the sense of to dwell on — a gerund-as-modifier that describes mood more than reflectance. Used as a color word principally in art criticism since the late nineteenth century: brooding sky, brooding portrait. In the engine's adjective grid, brooding sits in the dark-and-quiet end where the hue is present but reads as withholding rather than presenting itself.

Hoar
modifier

Old English hār, grey-with-age-or-hoar-frost. As a color modifier, hoar implies a grey-aged-and-hoar-frosted quality, the visual register of English-meadow-and-hedgerow-hoar hand-grey-aged-and-hoar-frosted English-meadow-and-hedgerow-hoar-and-frosted-pasture hoar-and-grey-aged-and-hoar-frosted surfaces under English-meadow-and-hedgerow-hoar-and-frosted-pasture Cotswold-and-Yorkshire-Dales-frost-pasture frosted-meadow-light. Sits at the modifier-and-weather end of the grid, parallel to rime and sleet 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.

#021537
Original
#011938
Protanopia
#001436
Deuteranopia
#001d23
Tritanopia
#131313
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
18.03:1
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
1.17:1

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
##021537
Display P3
Display P3
color(display-p3 0.0237 0.0806 0.2070)
Inside sRGBOKLCH chroma 0.072

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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