colors
Back to gallery

Cavalier Gable Sapphire

#3644b4
Notes

Cavalier Gable Sapphire (#3644B4) 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 (233°, 54%, 46%) 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
#3644b4
RGB
rgb(54, 68, 180)
HSL
hsl(233, 54%, 46%)
HWB
hwb(233 21% 29%)
OKLCH
oklch(44.7% 0.176 271.7)
HSV
hsv(233, 70%, 71%)
LAB
lab(34.42% 32.26 -61.08)
LCH
lch(34.42% 69.08 297.84)
CMYK
cmyk(70%, 62%, 0%, 29%)

Etymology

Cavalier
adjective

Italian cavaliere, horseman / knight via Latin caballārius. As a color modifier, cavalier implies a saturated-and-chivalrous-and-aristocratic quality, the deep-rich color of English-Civil-War royalist Cavalier military-faction velvet-and-lace-and-feathered-hat livery. Sits at the bold-and-chivalrous end of the grid, parallel to gallant and knightly.

Gable
modifier

Old French gable, triangular-end-of-pitched-roof. As a color modifier, gable implies a triangular-end-of-pitched-roof quality, the visual register of English-and-Tudor-and-Pennsylvania-Dutch-gable hand-built triangular-pitched-roof gable-and-dormer architectural surfaces under English-and-Tudor-and-Dutch gable-end light. Sits at the modifier-and-architecture end of the grid, parallel to eave and truss in usage.

Sapphire
noun

An iron-and-titanium-bearing corundum — the same mineral as ruby, hardness 9 on the Mohs scale, mined for two millennia from Sri Lanka, Burma, Madagascar, and the Cashmere mines of British India. The color refers to a fine Kashmir-cut sapphire: a saturated, slightly violet-shifted deep blue with the gem's signature internal velvet — a quality of light scattering in the stone that faceted glass cannot replicate. Cooler than cobalt, deeper than azure.

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.

#3644b4
Original
#0057b8
Protanopia
#004bb2
Deuteranopia
#006175
Tritanopia
#494949
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
7.95:1
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
2.64:1

Related Colors

Canvas