#333399 - Bluebell color

A dense, cool indigo with strong navy depth and a subtle violet undertone. It reads as serious and slightly moody, evoking twilight skies and polished denim. This color feels sophisticated and stable, lending quiet authority when used in branding, interfaces, or accents. Pair with warm metallics for contrast, soft pastels for balance, or crisp whites and light grays for modern clarity. Works well for headers, buttons, or backgrounds where refined presence and readable contrast are important.

#333399 color RGB value is 51, 51, 153, and the CMYK value is 0.667, 0.667, 0.00, 0.400. Alternative names for that color are: bluebell, indigo, midnightblue, smalt, royal purple.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	51, 51, 153	rgb(51, 51, 153)
CMYK	0.667, 0.667, 0.00, 0.400	-
sRGB	0.200, 0.200, 0.600	rgb(20%, 20%, 60%)
Adobe® 98 RGB compatible	0.212, 0.212, 0.584	color(a98-rgb, 0.212, 0.212, 0.584)
HCT	285, 55.1, 27.8	color(--hct, 285, 38%, 27.8%)
HSL	240, 50.0, 40.0	hsl(240, 50%, 40%)
HSV	240, 66.7, 60.0	color(--hsv, 240, 66.7%, 60%)
HWB	240, 20.0, 40.0	hwb(240, 20%, 40%)
Lab	26.9, 26.6, -57.0	lab(26.9%, 26.6, -57)
P3	0.200, 0.200, 0.578	color(display-p3, 0.2, 0.2, 0.578)
XYZ D50	0.0728, 0.0504, 0.231	color(xyz-d50, 0.073, 0.05, 0.231)