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Bastioned Ray Sapphire

#1d3ba6
Notes

Bastioned Ray Sapphire (#1D3BA6) is a true blue with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (227°, 70%, 38%) 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
#1d3ba6
RGB
rgb(29, 59, 166)
HSL
hsl(227, 70%, 38%)
HWB
hwb(227 11% 35%)
OKLCH
oklch(40.6% 0.175 266.2)
P3
color(display-p3 0.1422 0.2285 0.6267)
HSV
hsv(227, 83%, 65%)
LAB
lab(29.77% 30.22 -60.38)
LCH
lch(29.77% 67.52 296.58)
CMYK
cmyk(83%, 64%, 0%, 35%)

Etymology

Bastioned
adjective

Italian bastionato, fortified-with-bastions — past-participle of bastion, derived from bastia (fortified-tower). As a color modifier, bastioned implies a saturated-and-fortified-and-projecting quality, the deep-rich color of Vauban-period military-fortress star-fort projecting-bastion stone-architecture. Sits at the bold-and-fortified end of the grid, parallel to fortified and buttressed.

Ray
modifier

Latin radius, spoke-or-beam. As a color modifier, ray implies a radiant-and-spoke-of-light quality, the visual register of Bernini-Gloria-and-Baroque-altarpiece-ray hand-radiant-and-spoke-of-light Bernini-Gloria-and-Baroque-altarpiece-and-Counter-Reformation rayed-and-radiant-and-spoke-of-light surfaces under Bernini-Gloria-and-Baroque-altarpiece-and-Counter-Reformation gilded-spoke-and-altar-and-cathedral-dome heavenly-light. Sits at the modifier-and-mood end of the grid, parallel to beam and gleam 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.

#1d3ba6
Original
#004da9
Protanopia
#0040a4
Deuteranopia
#00576b
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
9.42:1
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
2.23:1

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
##1D3BA6
Display P3
Display P3
color(display-p3 0.1422 0.2285 0.6267)
P3 has subtle headroomOKLCH chroma 0.175

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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