#2b4057 - Blue Tone Ink color

A deep, cool slate-blue with strong charcoal undertones and a subtle green-teal cast. It reads as sophisticated and restrained, combining the seriousness of navy with an urban, modern gray. Ideal for corporate identities, elegant user-interface backgrounds, and moody interiors, it anchors palettes without overpowering accent tones. It conveys calm authority, reliability, and a quietly contemporary edge, pairing beautifully with warm woods, soft creams, and brighter citrus or coral accents for contrast.

#2b4057 color RGB value is 43, 64, 87, and the CMYK value is 0.506, 0.264, 0.00, 0.659. Alternative names for that color are: blue tone ink, black, darkslategray, pickled bluewood, outer space, indigo, darkslategrey.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	43, 64, 87	rgb(43, 64, 87)
CMYK	0.506, 0.264, 0.00, 0.659	-
sRGB	0.169, 0.251, 0.341	rgb(16.9%, 25.1%, 34.1%)
Adobe® 98 RGB compatible	0.209, 0.259, 0.340	color(a98-rgb, 0.209, 0.259, 0.34)
HCT	252, 22.3, 26.4	color(--hct, 252, 15.4%, 26.4%)
HSL	211, 33.8, 25.5	hsl(211, 33.8%, 25.5%)
HSV	211, 50.6, 34.1	color(--hsv, 211, 50.6%, 34.1%)
HWB	211, 16.9, 65.9	hwb(211, 16.9%, 65.9%)
Lab	26.1, -3.04, -16.6	lab(26.1%, -3.04, -16.6)
P3	0.186, 0.249, 0.333	color(display-p3, 0.186, 0.249, 0.333)
XYZ D50	0.0439, 0.0479, 0.0734	color(xyz-d50, 0.044, 0.048, 0.073)