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Menacing Bayou

#154552
Notes

Menacing Bayou (#154552) is a deep cyan with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (193°, 59%, 20%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#154552
RGB
rgb(21, 69, 82)
HSL
hsl(193, 59%, 20%)
HWB
hwb(193 8% 68%)
OKLCH
oklch(36.5% 0.055 219.3)
P3
color(display-p3 0.1369 0.2666 0.3157)
HSV
hsv(193, 74%, 32%)
LAB
lab(26.80% -11.17 -12.48)
LCH
lch(26.80% 16.75 228.18)
CMYK
cmyk(74%, 16%, 0%, 68%)

Etymology

Menacing
adjective

Latin minārī, to threaten — present-participle of menace, sharing root with minatory. As a color modifier, menacing implies a deep-and-threatening-and-imposing quality, the dark cool-gray of looming storm-cloud-and-imposing-cliff visual-presence. Sits at the deep-and-threatening end of the grid, parallel to ominous and foreboding in tone.

Bayou
noun

A slow-moving body of water in the Mississippi-Louisiana wetland — particularly the Atchafalaya Basin and Cajun Country swamps. Bayou color refers to typical Louisiana bayou water: a soft, slightly cool deep blue-green with the optical complexity of tannin-stained slow-moving freshwater under cypress canopy.

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.

#154552
Original
#3d4353
Protanopia
#343d52
Deuteranopia
#004949
Tritanopia
#3c3c3c
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
10.47:1
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
2.00:1

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
##154552
Display P3
Display P3
color(display-p3 0.1369 0.2666 0.3157)
Inside sRGBOKLCH chroma 0.055

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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