#A66C3F Color

#A66C3F is rgb(166, 108, 63) in RGB, hsl(26, 45%, 45%) in HSL, and about cmyk(0%, 35%, 62%, 35%) in CMYK. It has no registered color name of its own — the closest is Metallic Bronze (#A97142), below the threshold most people can see at ΔE 2.08. Black text is the more readable choice on this background.

#A66C3F

HEX#A66C3F

RGBrgb(166, 108, 63)

HSLhsl(26, 45%, 45%)

HSVhsv(26, 62%, 65%)

CMYKcmyk(0%, 35%, 62%, 35%)

OKLCHoklch(58.4% 0.096 57.2)

LABlab(51.31% 20.48 34.78)

LCHlch(51.31% 40.36 59.51)

What #A66C3F 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 #A66C3F, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Metallic Bronze#A97142ΔE 2.08 Brown Sugar#AF6E4DΔE 6.53 Coconut#965A3EΔE 10.47 Copper#B87333ΔE 12.29 Sienna#A0522DΔE 12.68 Café Au Lait#A67B5BΔE 12.8

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

#A66C3F Channel Values

How #A66C3F breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 166 · G 108 · B 63	8-bit channels as sent to the display
HSL	H 26° · S 45% · L 45%	Easiest model for building lighter and darker variants
HSV	H 26° · S 62% · V 65%	Matches the picker in most design tools
CMYK	C 0% · M 35% · Y 62% · K 35%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	4.34:1 vs white · 4.84:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #A66C3F 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 text4.34:1AA normal AA large AAA normal

TextBlack text4.84:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #A66C3F in the contrast checker.

Colors That Go With #A66C3F

Pairings derived from color-wheel relationships. The complementary color sits opposite #A66C3F; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #A66C3F

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

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #A66C3F.

How #A66C3F 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#A66C3F

Protanopia#78783E

Protanomaly#8D743F

Deuteranopia#83833B

Deuteranomaly#927A3C

Tritanopia#A86868

Tritanomaly#A7695A

Achromatopsia#797979

Test a full palette in the color blindness simulator.

Using #A66C3F in Code

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

CSS custom property--color-a66c3f: #A66C3F;

CSS backgroundbackground-color: #A66C3F;

Tailwind configcolors: { 'color-a66c3f': '#A66C3F' }

SwiftUIColor(red: 0.651, green: 0.424, blue: 0.247)

Android XML<color name="color_a66c3f">#A66C3F</color>

SVG fillfill="#A66C3F"

More Orange Colors

#A66C3F sits in the orange family. These are its neighbours across that family's full range, each with its own breakdown.

8b7d6b fff9f5 967969 fff9f0 987456 fff8f0 987654 fff8eb 9b7653 fff7ed 9c8b6e fff7eb c8ad7f dba875 e3dac9 eba675 f1ddcf f8dcd3 fcf5ee ff681f ff9933 ffb83d ffd68a ffe7d1

#A66C3F Frequently Asked Questions

What color is #A66C3F?

#A66C3F is a mid-tone orange — rgb(166, 108, 63) in RGB and hsl(26, 45%, 45%) in HSL. It carries no registered color name of its own; the closest named color is Metallic Bronze (#A97142), which is below the threshold most people can see at a CIE76 distance of 2.08.

What is the RGB value of #A66C3F?

#A66C3F is rgb(166, 108, 63) — red 166, green 108, and blue 63 on the 0-255 scale.

What is the CMYK value of #A66C3F?

#A66C3F converts to approximately cmyk(0%, 35%, 62%, 35%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #A66C3F be black or white?

Black text is the more readable choice. #A66C3F scores 4.34:1 against white and 4.84:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #A66C3F as a CSS color keyword?

No. #A66C3F 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 sienna (#A0522D) at a CIE76 distance of 12.68, which is visibly different.

Open #A66C3F in a Tool

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