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Buttressed Pacific

#1788df
Notes

Buttressed Pacific (#1788DF) is a true azure with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (206°, 81%, 48%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1788df
RGB
rgb(23, 136, 223)
HSL
hsl(206, 81%, 48%)
HWB
hwb(206 9% 13%)
OKLCH
oklch(61.3% 0.161 248.8)
HSV
hsv(206, 90%, 87%)
LAB
lab(55.19% 2.32 -52.36)
LCH
lch(55.19% 52.41 272.53)
CMYK
cmyk(90%, 39%, 0%, 13%)

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.

Pacific
noun

The largest ocean by area — covering a third of Earth's surface, stretching from the Bering Strait to the Antarctic. Named Mar Pacifico by Magellan in 1520 for the unusually calm waters his fleet encountered after rounding Cape Horn. The color refers to the average reflectance of mid-Pacific deep water: a saturated, slightly green-shifted very deep blue with the optical depth of an ocean that's largely free of continental shelf and river silt.

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.

#1788df
Original
#5d8de3
Protanopia
#3d7cdd
Deuteranopia
#009da9
Tritanopia
#767676
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).
AA Largeon White
3.73:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
5.62:1

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