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Dim Stalk Ultramarine

#040e49
Notes

Dim Stalk Ultramarine (#040E49) 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 (231°, 90%, 15%) 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
#040e49
RGB
rgb(4, 14, 73)
HSL
hsl(231, 90%, 15%)
HWB
hwb(231 2% 71%)
OKLCH
oklch(21.1% 0.109 266.4)
P3
color(display-p3 0.0230 0.0538 0.2740)
HSV
hsv(231, 95%, 29%)
LAB
lab(7.41% 21.91 -37.34)
LCH
lch(7.41% 43.29 300.41)
CMYK
cmyk(95%, 81%, 0%, 71%)

Etymology

Dim
adjective

Old English dim, dark, obscured. As a color modifier, dim implies reduced luminance without specific saturation effect — a dim red is a less luminous version of red rather than a less saturated one. Sits at the value-only end of the deep grid, closer to dark than to plush.

Stalk
modifier

Old English stealcung, to-walk-stealthily. As a color modifier, stalk implies a deliberate-and-stealthy-and-tracked quality, the visual register of Highland-stalker-and-stag-stalk hand-deliberate-and-stealthy-and-tracked Highland-stalker-and-stag-and-tracker stalked-and-deliberate-and-stealthy-and-tracked surfaces under Highland-stalker-and-stag-and-tracker heather-moor-and-corrie-and-deer-forest tracked-and-stealthy-light. Sits at the modifier-and-mood end of the grid, parallel to prowl and creep 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.

#040e49
Original
#001a4b
Protanopia
#001348
Deuteranopia
#001f2a
Tritanopia
#101010
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
18.04:1
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
1.16:1

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
##040E49
Display P3
Display P3
color(display-p3 0.0230 0.0538 0.2740)
P3 has subtle headroomOKLCH chroma 0.109

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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