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Dominant Lepidolite

#3b3db9
Notes

Dominant Lepidolite (#3B3DB9) 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 (239°, 52%, 48%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#3b3db9
RGB
rgb(59, 61, 185)
HSL
hsl(239, 52%, 48%)
HWB
hwb(239 23% 27%)
OKLCH
oklch(44.3% 0.190 274.7)
P3
color(display-p3 0.2328 0.2390 0.6985)
HSV
hsv(239, 68%, 73%)
LAB
lab(33.50% 39.05 -65.54)
LCH
lch(33.50% 76.29 300.79)
CMYK
cmyk(68%, 67%, 0%, 27%)

Etymology

Dominant
adjective

Latin dominārī, to rule — present-participle of dominate. As a color modifier, dominant implies a saturated-and-leading quality where the hue claims visual precedence over neighboring colors in the surrounding palette. Sits at the bold-and-imperative end of the grid, parallel to commanding and authoritative.

Lepidolite
noun

Lithium-bearing potassium mica — pink-to-violet from manganese substitution, sourced from Newry, Maine, and Tanco, Manitoba. The mineral was the Soviet space program's primary lithium source. Lepidolite color refers to a Newry lepidolite booklet on its native pegmatite matrix: a saturated, slightly cool deep blue-violet with the silvery finish of foliated mica with lithium-substitution-induced violet coloration in the cleavage planes.

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.

#3b3db9
Original
#0055bd
Protanopia
#0049b7
Deuteranopia
#005e76
Tritanopia
#464646
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
8.22:1
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
2.55:1

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
##3B3DB9
Display P3
Display P3
color(display-p3 0.2328 0.2390 0.6985)
P3 has visible headroomOKLCH chroma 0.190

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

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