#666699 - Dark Horizon color

A muted indigo-gray with a cool, desaturated purple cast, this color reads as a smoky, dusk-like shade—balanced between slate and lavender. It feels restrained and sophisticated, evoking calm, introspection, and subtle elegance. Ideal as a backdrop or accent, it pairs beautifully with warm neutrals, soft blushes, and metallic gold for contrast, and works well in modern interfaces, textiles, and interiors where a quiet, moody atmosphere is desired without feeling heavy or overpowering.

#666699 color RGB value is 102, 102, 153, and the CMYK value is 0.333, 0.333, 0.00, 0.400. Alternative names for that color are: dark horizon, gray, steelblue, kimberly, violet (purple), violet.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	102, 102, 153	rgb(102, 102, 153)
CMYK	0.333, 0.333, 0.00, 0.400	-
sRGB	0.400, 0.400, 0.600	rgb(40%, 40%, 60%)
Adobe® 98 RGB compatible	0.399, 0.399, 0.588	color(a98-rgb, 0.399, 0.399, 0.588)
HCT	286, 32.5, 45.1	color(--hct, 286, 22.4%, 45.1%)
HSL	240, 20.0, 50.0	hsl(240, 20%, 50%)
HSV	240, 33.3, 60.0	color(--hsv, 240, 33.3%, 60%)
HWB	240, 40.0, 40.0	hwb(240, 40%, 40%)
Lab	44.8, 9.53, -28.1	lab(44.8%, 9.53, -28.1)
P3	0.400, 0.400, 0.586	color(display-p3, 0.4, 0.4, 0.586)
XYZ D50	0.155, 0.144, 0.242	color(xyz-d50, 0.155, 0.144, 0.242)