#1805db - Ultramarine color

An intense, saturated cobalt-blue leaning toward indigo with a vivid violet undertone. It reads cool and electric, producing a luminous, high-contrast presence against white and pale neutrals while feeling deep and velvety against black. The color conveys modernity, confidence, and a hint of mystery—perfect for bold accents, tech branding, or dramatic fashion. Its depth suggests nighttime skies and neon signage, combining sophistication with energetic creativity; it commands attention without feeling garish.

#1805db color RGB value is 24, 5, 219, and the CMYK value is 0.890, 0.977, 0.00, 0.141. Alternative names for that color are: ultramarine, blue, mediumblue, dark blue, purple heart.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	24, 5, 219	rgb(24, 5, 219)
CMYK	0.890, 0.977, 0.00, 0.141	-
sRGB	0.0941, 0.0196, 0.859	rgb(9.41%, 1.96%, 85.9%)
Adobe® 98 RGB compatible	0.105, 0.0523, 0.839	color(a98-rgb, 0.105, 0.052, 0.839)
HCT	284, 79.1, 27.9	color(--hct, 284, 54.6%, 27.9%)
HSL	245, 95.5, 43.9	hsl(245, 95.5%, 43.9%)
HSV	245, 97.7, 85.9	color(--hsv, 245, 97.7%, 85.9%)
HWB	245, 1.96, 14.1	hwb(245, 1.96%, 14.1%)
Lab	25.6, 60.2, -98.2	lab(25.6%, 60.2, -98.2)
P3	0.0845, 0.0229, 0.824	color(display-p3, 0.084, 0.023, 0.824)
XYZ D50	0.106, 0.0461, 0.506	color(xyz-d50, 0.106, 0.046, 0.506)