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Caliginous Loganberry

#33172c
Notes

Caliginous Loganberry (#33172C) is a deep magenta 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 (315°, 38%, 15%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#33172c
RGB
rgb(51, 23, 44)
HSL
hsl(315, 38%, 15%)
HWB
hwb(315 9% 80%)
OKLCH
oklch(25.4% 0.056 337.3)
P3
color(display-p3 0.1854 0.0958 0.1685)
HSV
hsv(315, 55%, 20%)
LAB
lab(12.60% 17.61 -7.98)
LCH
lch(12.60% 19.34 335.61)
CMYK
cmyk(0%, 55%, 14%, 80%)

Etymology

Caliginous
adjective

Latin cālīginōsus, misty / dark — derived from cālīgō (mist, gloom). As a color modifier, caliginous implies an obscured, dimmed, slightly-cool-shifted quality where the hue is veiled by darkness or atmospheric fog. Sits at the deep-and-veiled end of the grid, between murky and tenebrous in usage.

Loganberry
noun

Rubus × loganobaccus — a chance hybrid between Rubus ursinus (Pacific blackberry) and Rubus idaeus (raspberry) discovered in 1881 by Judge James Harvey Logan of Santa Cruz, California. Loganberry color refers to a freshly picked Rubus × loganobaccus aggregate-drupe-cluster: a saturated, slightly cool deep magenta with the matte finish of anthocyanin-rich aggregate drupelets. Slightly cooler than raspberry.

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.

#33172c
Original
#181e2d
Protanopia
#1f222b
Deuteranopia
#36181f
Tritanopia
#1e1e1e
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
16.16:1
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
1.30:1

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
##33172C
Display P3
Display P3
color(display-p3 0.1854 0.0958 0.1685)
Inside sRGBOKLCH chroma 0.056

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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