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#A3666C Color

#A3666C is rgb(163, 102, 108) in RGB, hsl(354, 25%, 52%) in HSL, and about cmyk(0%, 37%, 34%, 36%) in CMYK. It has no registered color name of its own — the closest is Copper Rose (#996666), clearly related but distinguishable side by side at ΔE 5.05. Black text is the more readable choice on this background.

#A3666C
HEX#A3666C
RGBrgb(163, 102, 108)
HSLhsl(354, 25%, 52%)
HSVhsv(354, 37%, 64%)
CMYKcmyk(0%, 37%, 34%, 36%)
OKLCHoklch(57.8% 0.079 13.4)
LABlab(50.20% 25.80 7.49)
LCHlch(50.20% 26.87 16.18)

What #A3666C Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #A3666C, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Copper Rose#996666ΔE 5.05Rose Dust#9E5E6FΔE 6.44Rose Gold#B76E79ΔE 6.84Turkish Rose#B57281ΔE 7.44Copper Penny#AD6F69ΔE 7.5Mauve Taupe#915F6DΔE 8.41

Browse the full index of named colors A-Z or every red in the library.

#A3666C Channel Values

How #A3666C breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 163 · G 102 · B 1088-bit channels as sent to the display
HSLH 354° · S 25% · L 52%Easiest model for building lighter and darker variants
HSVH 354° · S 37% · V 64%Matches the picker in most design tools
CMYKC 0% · M 37% · Y 34% · K 36%Approximate ink mix; confirm with an ICC profile before printing
Luminance4.49:1 vs white · 4.67:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #A3666C background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

Fails AAWhite text4.49:1AA normal AA large AAA normal
TextBlack text4.67:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #A3666C in the contrast checker.

Colors That Go With #A3666C

Pairings derived from color-wheel relationships. The complementary color sits opposite #A3666C; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#A3666C
Complementary
#66A39D
Analogous
#A3668B
Analogous
#A37E66
Triadic
#6CA366
Triadic
#666CA3
Split comp.
#66A37E
Split comp.
#668BA3

Tints & Shades of #A3666C

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

#B17C82
#BC8F94
#C9A6A9
#D5B9BC
#E2CFD1
#EEE2E3

Shades

#8F565C
#79494E
#633B3F
#503033
#392225
#231516

Want a full 50-950 ramp with semantic roles? Generate design tokens from #A3666C.

How #A3666C Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#A3666C
Protanopia#73736C
Protanomaly#896E6C
Deuteranopia#7E7E6A
Deuteranomaly#8E756B
Tritanopia#A36767
Tritanomaly#A36669
Achromatopsia#777777

Test a full palette in the color blindness simulator.

Using #A3666C in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-a3666c: #A3666C;
CSS backgroundbackground-color: #A3666C;
Tailwind configcolors: { 'color-a3666c': '#A3666C' }
SwiftUIColor(red: 0.639, green: 0.400, blue: 0.424)
Android XML<color name="color_a3666c">#A3666C</color>
SVG fillfill="#A3666C"

More Red Colors

#A3666C sits in the red family. These are its neighbours across that family's full range, each with its own breakdown.

1f0000fffafa1f0005fff5f51f0008fff1f2240000fff1f0240909fff0f2270707ffedeb4e0707710f04940000a81c07c0362ccdacace30022ee204dfa8072ff1818ff6467ffb7c5

#A3666C Frequently Asked Questions

What color is #A3666C?

#A3666C is a mid-tone red — rgb(163, 102, 108) in RGB and hsl(354, 25%, 52%) in HSL. It carries no registered color name of its own; the closest named color is Copper Rose (#996666), which is clearly related but distinguishable side by side at a CIE76 distance of 5.05.

What is the RGB value of #A3666C?

#A3666C is rgb(163, 102, 108) — red 163, green 102, and blue 108 on the 0-255 scale.

What is the CMYK value of #A3666C?

#A3666C converts to approximately cmyk(0%, 37%, 34%, 36%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #A3666C be black or white?

Black text is the more readable choice. #A3666C scores 4.49:1 against white and 4.67:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #A3666C as a CSS color keyword?

No. #A3666C is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is rosybrown (#BC8F8F) at a CIE76 distance of 15.91, which is visibly different.

Open #A3666C in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

Keep exploring: every red in the color library, the guide to shades of red, or the full color library.