Color Name
Old Heliotrope*
Hex Color Code
#664E6E
RGB Color Code
RGB(102, 78, 110)
CMYK Values*
7.3%, 29.1%, 0.0%, 56.9%
#664E6E hex color. RGB, RYB, CMYK, HSL, HSV codes and color conversions. Matching color names, palettes, paints.

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What color is 664E6E?

The RGB color code for color number #664E6E is RGB(102, 78, 110). In the RGB color model, #664E6E has a red value of 102, a green value of 78, and a blue value of 110. The CMYK color model (also known as process color, used in color printing) comprises 7.3% cyan, 29.1% magenta, 0.0% yellow, and 56.9% key (black). The HSL color scale has a hue of 285° (degrees), 17.0 % saturation, and 36.9 % lightness. In the HSB/HSV color space, #664E6E has a hue of 285° (degrees), 29.1 % saturation and 43.1 % brightness/value.

Color 664E6E is cool or warm?

Color 664E6E is a warm color.

What is the LRV of #664E6E? (For interior and product design)

664E6E has an LRV of nearly 9.4. By LRV value, it is a dark color.

Light Reflectance Value (LRV) is a measure of how much visible light is reflected off a surface. It is a number on a scale of 0 to 100, with 0 being pure black and 100 being pure white. The higher the LRV, the more light the color reflects and the lighter it will appear.

Dark Color
#664E6E
LRV 9.4
Light Color

Compare LRV 9.4 of #664E6E with dark and light color

Is #664E6E Readable? WCAG Contrast Checker (For digital design)

Check if the color 664E6E meets Web Content Accessibility Guidelines (WCAG) standards, minimum contrast ratio standards between text and background colors. The WCAG (Web Content Accessibility Guidelines) provides global standards for readable web content.

WCAG Recommendations - Large Text: above 18pt or 14pt bold. Normal Text: below 18pt or 14pt bold.

  • Minimum contrast ratio (AA): 4.5 for normal text and 3 for large text.
  • Enhanced contrast ratio (AAA): 7 for normal text and 4.5 for large text.

Normal text - 14pt

Normal Bold text - 12pt


Large text - 18pt

Large Bold text - 14pt

Color Codes - Color Space Conversions

HEX #664E6E color codes / color number / color space conversions - RGBA, HSL, HSV/HSB, HYZ, CMY, HWB, RYB

HEX #664E6E
Hex triplet
#664E6E
Red
66
Green
4E
Blue
6E
RGBA / RGB rgb(102, 78, 110)
Red
102 (40.0%)
Green
78 (30.6%)
Blue
110 (43.1%)
Alpha
1 (100.0%)
CMYK
Cyan
7.27%
Magenta
29.09%
Yellow
0.00%
Key
56.86%
HSL hsl(285deg, 17.0 %, 36.9 %)
Hue
285°
Saturation
17.02 %
Lightness
36.86 %
HSV / HSB
Hue
285°
Saturation
29.09 %
Brightness / Value
43.14 %
RYB ryb(110, 106, 138)
Red
110 (43.2%)
Yellow
106 (41.5%)
Blue
138 (54.0%)
HWB
Hue
285°
Whiteness
30.59 %
Blackness
56.86 %
CMY
Cyan
60.00%
Magenta
69.41%
Yellow
56.86%
XYZ
X
11.02
Y
9.4
Z
15.99
YXY
Y1
9.4
X
0.3
Y2
0.26
CIE-Lab
L
36.74
A
16.46
B
-14.57
CIE-Lch
L
36.74
C
21.99
H
318.48
CIE-Luv
L
36.74
U
10.78
V
-21.63
Hunter-Lab
L
30.66
A
10.5
B
-9.45
Other
LRV
~ 9.4 %
Munsell Color System
6.4P 3.5/3.7

Color Names, Similar Colors and Paint

What is Delta E (ΔE)?

Delta E is the standard measure of how different two colors look to the human eye, rather than how far apart their hex codes happen to be. It runs from 0, an exact match, to 100, the largest possible difference — so the lower the Delta E, the closer the match. The match percentage shown on each color below is simply 100% minus its ΔE.

ΔE 0
Identical – an exact match
ΔE under 1
Not perceptible; the eye cannot separate them
ΔE 1 – 2
Perceptible only on close, side-by-side inspection
ΔE 2 – 10
Perceptible at a glance
ΔE over 10
Reads as a different color altogether

Color Name of HEX #664E6E

These are the named colors closest to hex 664E6E, closest match first. Each card shows how much of the color the human eye sees as the same, measured as Delta E (ΔE).

#563C5C Color Old Heliotrope
94.02% match | ΔE 5.98
#5D3954 Color Dark Byzantium
92.39% match | ΔE 7.61
#5C5A6F Color Purple Fog
90.70% match | ΔE 9.30

Similar colors from Pantone, RAL and other color matching system


British Standard 4800

British Standard 4800 color similar/equivalent to 664E6E.


Pantone TCX

Pantone TCX color similar/equivalent to 664E6E.


Pantone PMS

Pantone PMS color similar/equivalent to 664E6E.

#5C4E63 Color PANTONE 7666 C
95.01% match | ΔE 4.99
#514064 Color PANTONE 4126 C
94.02% match | ΔE 5.98
#66435A Color PANTONE 5195 C
94.01% match | ΔE 5.99
#66596C Color PANTONE 2364 C
93.61% match | ΔE 6.39

RAL Design

RAL Design color similar/equivalent to 664E6E.


Paint color for Hex #664E6E

These are the real paint colors closest to hex 664E6E from major brands, ranked by Delta E (ΔE) match. A paint above 98% will be hard to tell apart from 664E6E once it is on a wall.


Dunn-Edwards

Hex color 664E6E similar/equivalent paint from Dunn-Edwards. Conversion of hex #664E6E to Dunn-Edwards


Behr

Hex color 664E6E similar/equivalent paint from Behr. Conversion of hex #664E6E to Behr


PPG Paints

Hex color 664E6E similar/equivalent paint from PPG Paints. Conversion of hex #664E6E to PPG Paints


Benjamin Moore

Hex color 664E6E similar/equivalent paint from Benjamin Moore. Conversion of hex #664E6E to Benjamin Moore


Valspar

Hex color 664E6E similar/equivalent paint from Valspar. Conversion of hex #664E6E to Valspar


Sherwin Williams

Hex color 664E6E similar/equivalent paint from Sherwin Williams. Conversion of hex #664E6E to Sherwin Williams


Farrow & Ball

Hex color 664E6E similar/equivalent paint from Farrow & Ball. Conversion of hex #664E6E to Farrow & Ball

#53454F Color Pelt (254)
90.04% match | ΔE 9.96
#5E4449 Color Brinjal (222)
88.64% match | ΔE 11.36
#3F4666 Color Blue Maize (CB11)
87.86% match | ΔE 12.14

Color Combinations and Matching Colors

#664E6E color palettes and scheme combination

Monochromatic Color Palette

Monochromatic colors belong to the same hue angle but different tints and shades. Monochromatic color palette can be generated by keeping the exact hue of the base color and then changing the saturation and lightness.

Analogous Color Palette

Analogous colors are a group of colors adjacent to each other on a color wheel. Group of these adjacent colors forms Analogous color scheme Palette. Analogous Palette can be generated by increasing or decreasing the hue value by 30 points.

Triadic Color Palette

The triadic color palette has three colors separated by 120° in the RGB color wheel

Tetradic Color Palette

The tetradic colour scheme composed of two sets of complementary colors in a rectangular shape on the color wheel.

Complementary / Opposite Color

#664E6E
Old Heliotrope*
#566E4E
Fern green*

Complementary / Opposite Color

Complementary colors are pairs of colors which, when combined or mixed, cancel each other out (lose hue) by producing a grayscale color like white or black. When placed next to each other, they create the strongest contrast for those two colors. Complementary colors also called opposite colors. Complementary color schemes are created using two opposite colors on the color wheel. The examples are red–cyan, green–magenta, and blue–yellow.

What is the contrasting color of #664E6E?

Color that best contrast with #664E6E is #566E4E, color name is Fern green*. Contrast indicates a strong difference in color. Contrasting color can be found several ways, Complimentary contrast is one of them. Complementary contrast colors are opposite each other on the color wheel.

What color compliments #664E6E?

Complementary or Opposite color for #664E6E is #566E4E, color name is Fern green*.

Color Images and Mockup

Mobile app mockup example for #664E6E color
T-Shirt mockup example for #664E6E color
Chart visualization example with #664E6E color

#664E6E Color Images and Patterns