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Fortified Niger

#366cba
Notes

Fortified Niger (#366CBA) 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°, 55%, 47%) 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
#366cba
RGB
rgb(54, 108, 186)
HSL
hsl(215, 55%, 47%)
HWB
hwb(215 21% 27%)
OKLCH
oklch(53.4% 0.135 257.8)
HSV
hsv(215, 71%, 73%)
LAB
lab(45.71% 8.62 -46.37)
LCH
lch(45.71% 47.17 280.53)
CMYK
cmyk(71%, 42%, 0%, 27%)

Etymology

Fortified
adjective

Latin fortificāre, to make strong — past-participle of fortify. As a color modifier, fortified implies a saturated-and-strengthened-and-defensive quality, the deep-rich color of Vauban-style military-fortification stone-and-earth rampart-and-bastion architecture. Sits at the bold-and-fortified end of the grid, parallel to bastioned and armored.

Niger
noun

The third-longest river in Africa — flowing through Guinea, Mali, Niger, Benin, and Nigeria to the Gulf of Guinea. Niger color refers to mid-depth Niger River water at Timbuktu in Mali: a saturated, slightly cool deep blue-brown with the optical complexity of West African inland-delta river water.

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

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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.

#366cba
Original
#4773bd
Protanopia
#3167b8
Deuteranopia
#007e8a
Tritanopia
#666666
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).
AAon White
5.24:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
4.01:1

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