| Livid (Blue-gray) | |
|---|---|
| Hex triplet | #6699CC |
| sRGBB (r, g, b) | (102, 153, 204) |
| HSV (h, s, v) | (210°, 50%, 80%) |
| CIELChuv (L, C, h) | (62, 54, 244°) |
| Source | Maerz and Paul (Crayola) |
| ISCC–NBS descriptor | Light blue |
| B: Normalized to [0–255] (byte) | |
Blue-gray (also blue-grey in British English) is a medium blue-gray color on the cool side of the color wheel. The name blue-gray was introduced by Crayola for a crayon color used from 1958 to 1990. The complementary color is #CC9966, a warm khaki or brown.
It has historically been called livid, from the Latin lividus, meaning "a dull leaden-blue color". The word entered English in the fifteenth century, first in medical use to describe the bluish-gray discoloration of bruised or damaged flesh, the condition also expressed in the phrase "black and blue". The familiar modern sense of livid meaning furiously angry developed later, via the intermediate sense of a face turning pale or ashen with rage.
There is a wide range of named blue-gray or livid shades, including steel blue, glaucous, cadet grey, and Payne's grey, among others. The color appears in nature, culture, and military uniform traditions around the world.
The colors below are arranged according to value (brightness, the V code in HSV), lightest at the top and darkest towards the bottom.
| Lavender gray | |
|---|---|
| Hex triplet | #C4C3D0 |
| sRGBB (r, g, b) | (196, 195, 208) |
| HSV (h, s, v) | (245°, 6%, 82%) |
| CIELChuv (L, C, h) | (79, 10, 269°) |
| Source | ISCC-NBS |
| ISCC–NBS descriptor | Light bluish-gray |
| B: Normalized to [0–255] (byte) | |
The historical name for this color is lavender gray. It is listed in A Dictionary of Color as one of the three major variations of lavender in 1930 along with lavender blue (shown below) and [floral] lavender (also shown below). (This book also designates a fourth shade of lavender, called old lavender, also shown below). This color is similar to Prismacolor colored pencil PC 1026, Greyed Lavender.
| Iceberg | |
|---|---|
| Hex triplet | #71A6D2 |
| sRGBB (r, g, b) | (113, 166, 210) |
| HSV (h, s, v) | (207°, 46%, 82%) |
| CIELChuv (L, C, h) | (66, 50, 239°) |
| Source | Maerz and Paul |
| ISCC–NBS descriptor | Light blue |
| B: Normalized to [0–255] (byte) | |
The color iceberg is displayed at right.
The first recorded use of iceberg as a color name in English was in 1921.

| Slate blue | |
|---|---|
| Hex triplet | #6A5ACD |
| sRGBB (r, g, b) | (106, 90, 205) |
| HSV (h, s, v) | (248°, 56%, 80%) |
| CIELChuv (L, C, h) | (45, 90, 269°) |
| Source | X11 |
| ISCC–NBS descriptor | Vivid purplish blue |
| B: Normalized to [0–255] (byte) | |
Displayed at right is the web color slate blue.
The first recorded use of slate blue as a color name in English was in 1796.
| Blue bell | |
|---|---|
| Hex triplet | #A2A2D0 |
| sRGBB (r, g, b) | (162, 162, 208) |
| HSV (h, s, v) | (240°, 22%, 82%) |
| CIELChuv (L, C, h) | (68, 38, 266°) |
| Source | Crayola |
| ISCC–NBS descriptor | Light purplish blue |
| B: Normalized to [0–255] (byte) | |
Blue bell is a shade of blue-gray. It is also a Crayola color. It represents the bluebell flower.
The first recorded use of bluebell as a color name in English was in 1920.

| Glaucous | |
|---|---|
| Hex triplet | #6082B6 |
| sRGBB (r, g, b) | (96, 130, 182) |
| HSV (h, s, v) | (216°, 47%, 71%) |
| CIELChuv (L, C, h) | (54, 51, 250°) |
| Source | ISCC-NBS |
| ISCC–NBS descriptor | Moderate blue |
| B: Normalized to [0–255] (byte) | |
Glaucous is a shade of blue-gray found on the surfaces of some plants and animals.
The first recorded use of glaucous as a color name in English was in the year 1671.

| Steel blue | |
|---|---|
| Hex triplet | #4682B4 |
| sRGBB (r, g, b) | (70, 130, 180) |
| HSV (h, s, v) | (207°, 61%, 71%) |
| CIELChuv (L, C, h) | (52, 54, 243°) |
| Source | X11 |
| ISCC–NBS descriptor | Moderate blue |
| B: Normalized to [0–255] (byte) | |
Steel blue is a color that resembles blue steel.
The first recorded use of steel blue as a color name in English was in 1817.
| Cadet grey | |
|---|---|
| Hex triplet | #91A3B0 |
| sRGBB (r, g, b) | (145, 163, 176) |
| HSV (h, s, v) | (205°, 18%, 69%) |
| CIELChuv (L, C, h) | (66, 16, 231°) |
| Source | ISCC-NBS |
| ISCC–NBS descriptor | Grayish blue |
| B: Normalized to [0–255] (byte) | |
Cadet grey, shown at right, and cadet blue, are shades of color used in military uniforms.
The first recorded use of cadet grey as a color name in English was in 1912. Before 1912, the word cadet grey was used as a name for a type of military issue uniform.
| Gray-blue | |
|---|---|
| Hex triplet | #8C92AC |
| sRGBB (r, g, b) | (140, 146, 172) |
| HSV (h, s, v) | (229°, 19%, 67%) |
| CIELChuv (L, C, h) | (61, 22, 258°) |
| Source | ISCC-NBS |
| ISCC–NBS descriptor | Pale blue |
| B: Normalized to [0–255] (byte) | |
Cool gray is a medium light color gray mixed with the color blue.
Another name for this color is gray-blue.
This color is a dull shade of blue-gray.
This color is identical with color sample #203 (identified as "gray blue") at the following website: https://web.archive.org/web/20170810183646/http://tx4.us/nbs/nbs-g.htm—The ISCC-NBS Dictionary of Colo(u)r Names (1955), a website for stamp collectors to evaluate the colors of their stamps.
| Air Force Blue | |
|---|---|
| Hex triplet | #5D8AA8 |
| sRGBB (r, g, b) | (93, 138, 168) |
| HSV (h, s, v) | (204°, 45%, 66%) |
| CIELChuv (L, C, h) | (55, 37, 234°) |
| Source | Vexillological: |
| ISCC–NBS descriptor | Moderate greenish blue |
| B: Normalized to [0–255] (byte) | |
Air force blue is a grayish shade of blue or azure used by the RAF.
There are other tones of air force blue, such as the darker one used by the United States Air Force.
| Shadow blue | |
|---|---|
| Hex triplet | #778BA5 |
| sRGBB (r, g, b) | (119, 139, 165) |
| HSV (h, s, v) | (214°, 28%, 65%) |
| CIELChuv (L, C, h) | (57, 26, 244°) |
| Source | Crayola |
| ISCC–NBS descriptor | Grayish blue |
| B: Normalized to [0–255] (byte) | |
The color shadow blue is displayed at right. Shadow blue is a color formulated by Crayola in 1990 as one of the colors in its Silver Swirls specialty box of metallic colors.
Although this is supposed to be a metallic color, there is no mechanism for displaying metallic colors on a computer.
| Dark blue-gray | |
|---|---|
| Hex triplet | #666699 |
| sRGBB (r, g, b) | (102, 102, 153) |
| HSV (h, s, v) | (240°, 33%, 60%) |
| CIELChuv (L, C, h) | (45, 42, 266°) |
| Source | WSC |
| ISCC–NBS descriptor | Moderate purplish blue |
| B: Normalized to [0–255] (byte) | |
The color dark blue-gray is displayed at right.
| Roman silver | |
|---|---|
| Hex triplet | #838996 |
| sRGBB (r, g, b) | (131, 137, 150) |
| HSV (h, s, v) | (221°, 13%, 59%) |
| CIELChuv (L, C, h) | (57, 12, 250°) |
| Source | Resene |
| ISCC–NBS descriptor | Bluish gray |
| B: Normalized to [0–255] (byte) | |
At right is displayed the color Roman silver.
Roman silver is one of the colors on the Resene Color List, a color list widely popular in Australia and New Zealand.
This color is supposed to be a metallic color; however, there is no mechanism for displaying metallic colors on a flat computer screen.
| Rhythm | |
|---|---|
| Hex triplet | #777696 |
| sRGBB (r, g, b) | (119, 118, 150) |
| HSV (h, s, v) | (242°, 21%, 59%) |
| CIELChuv (L, C, h) | (51, 26, 267°) |
| Source | Resene |
| ISCC–NBS descriptor | Grayish purplish blue |
| B: Normalized to [0–255] (byte) | |
Displayed at right is the color rhythm.
Rhythm is one of the colors on the Resene Color List, a color list widely popular in Australia and New Zealand. The color "rhythm" was formulated in 2004.
| Payne's gray | |
|---|---|
| Hex triplet | #536878 |
| sRGBB (r, g, b) | (83, 104, 120) |
| HSV (h, s, v) | (206°, 31%, 47%) |
| CIELChuv (L, C, h) | (43, 19, 234°) |
| Source | Ridgway: |
| ISCC–NBS descriptor | Grayish blue |
| B: Normalized to [0–255] (byte) | |
Payne's gray is a dark blue-gray color used in painting.
The first recorded use of Payne's grey as a color name in English was in 1835.

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