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Printed Rocky

#3f4a7c
Notes

Printed Rocky (#3F4A7C) 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 (229°, 33%, 37%) 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
#3f4a7c
RGB
rgb(63, 74, 124)
HSL
hsl(229, 33%, 37%)
HWB
hwb(229 25% 51%)
OKLCH
oklch(42.4% 0.084 272.9)
P3
color(display-p3 0.2553 0.2889 0.4723)
HSV
hsv(229, 49%, 49%)
LAB
lab(32.72% 10.35 -29.81)
LCH
lch(32.72% 31.56 289.15)
CMYK
cmyk(49%, 40%, 0%, 51%)

Etymology

Printed
adjective

Latin premere, to press — past-participle of print. As a color modifier, printed implies a clear-and-impressed-and-multiplied quality, the crisp color of Marimekko-and-Liberty-of-London hand-or-machine-printed textile-and-paper pattern-design. Sits at the crisp-and-printed end of the grid, parallel to stamped and etched in usage.

Rocky
noun

The North American mountain range — and the saturated deep blue of Rocky Mountain alpine lakes (Bear Lake, Sapphire Lake, Lake Louise) at high altitude. Rocky refers to Sapphire Lake in Montana's Glacier National Park: a saturated, slightly cool deep blue with the optical clarity of glacier-fed alpine 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

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.

#3f4a7c
Original
#37507e
Protanopia
#314b7b
Deuteranopia
#28545d
Tritanopia
#4b4b4b
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
8.46:1
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
2.48:1

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
##3F4A7C
Display P3
Display P3
color(display-p3 0.2553 0.2889 0.4723)
P3 has subtle headroomOKLCH chroma 0.084

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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