#1c39bb - Persian Blue color

A deep, vibrant cobalt-indigo blue with pronounced coolness and a subtle violet undertone. It reads as saturated and bold without being neon, offering clarity and a confident, modern character. This shade works well for corporate branding, tech interfaces, and accents that require both gravitas and approachability. Against white it feels crisp and authoritative; paired with pale neutrals it gains sophistication, while with brighter cyan or magenta it takes on an energetic, contemporary edge.

#1c39bb color RGB value is 28, 57, 187, and the CMYK value is 0.850, 0.695, 0.00, 0.267. Alternative names for that color are: persian blue, indigo, slateblue, purple heart.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	28, 57, 187	rgb(28, 57, 187)
CMYK	0.850, 0.695, 0.00, 0.267	-
sRGB	0.110, 0.224, 0.733	rgb(11%, 22.4%, 73.3%)
Adobe® 98 RGB compatible	0.169, 0.234, 0.715	color(a98-rgb, 0.169, 0.234, 0.715)
HCT	278, 65.1, 31.3	color(--hct, 278, 44.9%, 31.3%)
HSL	229, 74.0, 42.2	hsl(229, 74%, 42.2%)
HSV	229, 85.0, 73.3	color(--hsv, 229, 85%, 73.3%)
HWB	229, 11.0, 26.7	hwb(229, 11%, 26.7%)
Lab	29.9, 30.5, -72.4	lab(29.9%, 30.5, -72.4)
P3	0.137, 0.221, 0.705	color(display-p3, 0.137, 0.221, 0.705)
XYZ D50	0.0919, 0.0620, 0.359	color(xyz-d50, 0.092, 0.062, 0.359)