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Plumb Brood Denim

#2d5286
Notes

Plumb Brood Denim (#2D5286) is a true azure with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (215°, 50%, 35%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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
#2d5286
RGB
rgb(45, 82, 134)
HSL
hsl(215, 50%, 35%)
HWB
hwb(215 18% 47%)
OKLCH
oklch(43.8% 0.096 257.2)
P3
color(display-p3 0.2108 0.3180 0.5102)
HSV
hsv(215, 66%, 53%)
LAB
lab(34.63% 4.51 -33.04)
LCH
lch(34.63% 33.35 277.77)
CMYK
cmyk(66%, 39%, 0%, 47%)

Etymology

Plumb
adjective

Latin plumbum, lead — referring to the lead-weighted plumb-line of pre-modern carpentry. As a color modifier, plumb implies a clear-and-vertical-true quality where the hue carries the visual register of gravity-aligned-and-perfectly-vertical surface. Sits at the crisp-and-balanced end of the grid, parallel to level and squared in usage.

Brood
modifier

Old English brōd, young-of-birds-or-to-ponder. As a color modifier, brood implies a hen-and-pondering-and-darkly-thinking quality, the visual register of Heathcliff-and-Hamlet-brood hand-hen-and-pondering-and-darkly-thinking Heathcliff-and-Hamlet-and-Byronic-hero brooded-and-pondering-and-darkly-thinking surfaces under Heathcliff-and-Hamlet-and-Byronic-hero stormy-and-overcast-and-introspective Yorkshire-moor-light. Sits at the modifier-and-mood end of the grid, parallel to mope and sigh in usage.

Denim
noun

The diagonal-twill cotton fabric originally woven in Nîmes, France — serge de Nîmes, contracted to denim — and dyed with indigo since at least the eighteenth century. The color refers to a worn but un-faded pair of raw denim jeans: a saturated, slightly muted blue with the matte finish of cotton fiber that has absorbed dye through generations of weft and warp. Cooler than royal, warmer than navy.

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.

#2d5286
Original
#3b5688
Protanopia
#2f4e85
Deuteranopia
#005e65
Tritanopia
#4e4e4e
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
7.89:1
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
2.66:1

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
##2D5286
Display P3
Display P3
color(display-p3 0.2108 0.3180 0.5102)
P3 has subtle headroomOKLCH chroma 0.096

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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