United Nations blue

Blue
Wavelength	440–490 nm
Color coordinates
Hex triplet	#0000FF
sRGBB  (r, g, b)	(0, 0, 255)
CMYKH   (c, m, y, k)	(100, 100, 0, 0)
HSV       (h, s, v)	(240°, 100%, 100%)
Source	X11
B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred)

Baby blue
Color coordinates
Hex triplet	#89CFF0
sRGBB  (r, g, b)	(137, 207, 240)
CMYKH   (c, m, y, k)	(43, 14, 0, 6)
HSV       (h, s, v)	(199°, 43%, 94%)
Source	Maerz and Paul
B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred)

Light blue
Color coordinates
Hex triplet	#ADD8E6
sRGBB  (r, g, b)	(173, 216, 230)
CMYKH   (c, m, y, k)	(25, 6, 0, 10)
HSV       (h, s, v)	(195°, 25%, 90%)
Source	X11
B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred)

Periwinkle
Color coordinates
Hex triplet	#CCCCFF
sRGBB  (r, g, b)	(204, 204, 255)
CMYKH   (c, m, y, k)	(20, 20, 0, 0)
HSV       (h, s, v)	(240°, 20%, 100%)
Source	Maerz & Paul
B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred)

Powder Blue
Color coordinates
Hex triplet	#B0E0E6
sRGBB  (r, g, b)	(176, 224, 230)
CMYKH   (c, m, y, k)	(24, 3, 0, 10)
HSV       (h, s, v)	(187°, 23%, 90%)
Source	X11
B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred)

Morning Blue
Color coordinates
Hex triplet	#8DA399
sRGBB  (r, g, b)	(141, 163, 153)
HSV       (h, s, v)	(153°, 14%, 64%)
Source	ISCC-NBS
B: Normalized to [0–255] (byte)

Blue (RGB) (X11 blue)
Color coordinates
Hex triplet	#0000FF
sRGBB  (r, g, b)	(0, 0, 255)
CMYKH   (c, m, y, k)	(Not, possible, in, CMYK)
HSV       (h, s, v)	(240°, 100%, 100%)
Source	X11 color names HTML/CSS
B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred)

Blue (CMYK) (Pigment Blue)
Color coordinates
Hex triplet	#333399
sRGBB  (r, g, b)	(51, 51, 153)
CMYKH   (c, m, y, k)	(67, 67, 0, 40)
HSV       (h, s, v)	(240°, 67%, 60%)
Source	CMYK
B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred)

Blue (NCS)
Color coordinates
Hex triplet	#0087BD
sRGBB  (r, g, b)	(0, 135, 189)
HSV       (h, s, v)	(197°, 100%, 74%)
Source	sRGB approximation to NCS 2060-B
B: Normalized to [0–255] (byte)

Blue (Munsell)
Color coordinates
Hex triplet	#0093AF
sRGBB  (r, g, b)	(0, 147, 175)
CMYKH   (c, m, y, k)	(100, 16, 0, 31)
HSV       (h, s, v)	(190°, 100%, 69%)
Source	Munsell Color Wheel
B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred)

Varieties of the color blue may differ in hue, chroma (also called saturation, intensity, or colorfulness), or lightness (or value, tone, or brightness), or in two or three of these qualities. Variations in value are also called tints and shades, a tint being a blue or other hue mixed with white, a shade being mixed with black. A large selection of these various colors is shown below.

In this section, the term tint is used in its technical sense as used in color theory, meaning a blueish color mixed with white or light gray.

Baby blue is known as one of the pastel colors. With a hue code of 199, this color is a tone of azure.

The first recorded use of baby blue as a color name in English was in 1892.

The web color light blue is displayed in the color box at right. Variations of this color are known as sky blue, baby blue, or angel blue. Within the X11 color system, with a hue code of 194, this color is closer to cyan than to blue.

The first recorded use of "light blue" as a color term in English is in the year 1915.

Shown in the right is the color periwinkle, or periwinkle blue. Another name for this color is lavender blue. The color is a mixture of white and blue. It is named after the Periwinkle flower and is also commonly referred to as a tone of light blue.

The web color powder blue is shown on the right.

The first recorded use of powder blue as a color name in English was in 1774.

...
Wikipedia