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Buttressed Geneva

#374aba
Notes

Buttressed Geneva (#374ABA) is a true blue 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 (231°, 54%, 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
#374aba
RGB
rgb(55, 74, 186)
HSL
hsl(231, 54%, 47%)
HWB
hwb(231 22% 27%)
OKLCH
oklch(46.4% 0.177 270.5)
HSV
hsv(231, 70%, 73%)
LAB
lab(36.47% 30.69 -61.28)
LCH
lch(36.47% 68.53 296.61)
CMYK
cmyk(70%, 60%, 0%, 27%)

Etymology

Buttressed
adjective

Old French bouterez, thrusting-mass — past-participle of buttress, derived from bouter (to thrust). As a color modifier, buttressed implies a saturated-and-architecturally-supported quality, the deep-rich color of Gothic-Cathedral flying-buttress-and-rib-vault stone-architecture. Sits at the bold-and-fortified end of the grid, parallel to fortified and reinforced.

Geneva
noun

Lake Geneva — Lac Léman in French — the largest Alpine lake, between Switzerland and France. Geneva color refers to Lake Geneva water at Montreux in midsummer: a saturated, slightly cool deep blue with the optical depth of Alpine glacier-fed lake.

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.

#374aba
Original
#005cbe
Protanopia
#0050b8
Deuteranopia
#00667b
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
7.37:1
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
2.85:1

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