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Fortified Carved Ultramarine

#4f60b3
Notes

Fortified Carved Ultramarine (#4F60B3) is a true blue with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (230°, 40%, 51%) 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
#4f60b3
RGB
rgb(79, 96, 179)
HSL
hsl(230, 40%, 51%)
HWB
hwb(230 31% 30%)
OKLCH
oklch(51.7% 0.132 272.3)
P3
color(display-p3 0.3229 0.3745 0.6802)
HSV
hsv(230, 56%, 70%)
LAB
lab(43.18% 18.31 -46.25)
LCH
lch(43.18% 49.74 291.60)
CMYK
cmyk(56%, 46%, 0%, 30%)

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.

Carved
modifier

Old English ceorfan, to-cut. As a color modifier, carved implies a hand-cut-and-shaped quality, the visual register of Romanesque-and-Gothic-stone-carving hand-cut-and-shaped stone-and-wood-and-ivory hand-carved-and-relief carved-and-shaped surfaces under Romanesque-and-Gothic hand-carved-stone-and-wood workshop-light. Sits at the modifier-and-texture end of the grid, parallel to hewn and limned in usage.

Ultramarine
noun

The pigment ground from lapis lazuli — the Afghan mineral imported through Venice in the late Middle Ages, more expensive by weight than gold during the Renaissance. The color refers to a freshly mixed ultramarine pigment in linseed oil: a saturated, slightly violet-shifted deep blue with the matte finish of micron-ground rock. Deeper than cobalt, cooler than royal, with the art-historical weight of the blue Vermeer reserved for Mary's robe.

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.

#4f60b3
Original
#3a6bb6
Protanopia
#2d62b1
Deuteranopia
#177281
Tritanopia
#626262
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
5.74:1
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
3.66:1

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
##4F60B3
Display P3
Display P3
color(display-p3 0.3229 0.3745 0.6802)
P3 has subtle headroomOKLCH chroma 0.132

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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