#C66639 Color

#C66639 is rgb(198, 102, 57) in RGB, hsl(19, 55%, 50%) in HSL, and about cmyk(0%, 48%, 71%, 22%) in CMYK. It has no registered color name of its own — the closest is Copper Red (#CB6D51), visibly different at ΔE 10.15. Black text is the more readable choice on this background.

#C66639

HEX#C66639

RGBrgb(198, 102, 57)

HSLhsl(19, 55%, 50%)

HSVhsv(19, 71%, 78%)

CMYKcmyk(0%, 48%, 71%, 22%)

OKLCHoklch(61.5% 0.136 44.3)

LABlab(54.38% 36.65 42.80)

LCHlch(54.38% 56.35 49.43)

What #C66639 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 #C66639, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Copper Red#CB6D51ΔE 10.15 Medium Vermilion#D9603BΔE 10.55 Burnt Sienna#E97451ΔE 11.41 Liver (Dogs)#B86D29ΔE 11.67 Light Brown#B5651DΔE 11.85 Neon Brown#C3732AΔE 12.5

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

#C66639 Channel Values

How #C66639 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 198 · G 102 · B 57	8-bit channels as sent to the display
HSL	H 19° · S 55% · L 50%	Easiest model for building lighter and darker variants
HSV	H 19° · S 71% · V 78%	Matches the picker in most design tools
CMYK	C 0% · M 48% · Y 71% · K 22%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.92:1 vs white · 5.36:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #C66639 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 text3.92:1AA normal AA large AAA normal

TextBlack text5.36:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #C66639 in the contrast checker.

Colors That Go With #C66639

Pairings derived from color-wheel relationships. The complementary color sits opposite #C66639; 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 #C66639

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 #C66639.

How #C66639 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#C66639

Protanopia#7D7D38

Protanomaly#A07538

Deuteranopia#8F8F2F

Deuteranomaly#A88133

Tritanopia#C86262

Tritanomaly#C76354

Achromatopsia#818181

Test a full palette in the color blindness simulator.

Using #C66639 in Code

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

CSS custom property--color-c66639: #C66639;

CSS backgroundbackground-color: #C66639;

Tailwind configcolors: { 'color-c66639': '#C66639' }

SwiftUIColor(red: 0.776, green: 0.400, blue: 0.224)

Android XML<color name="color_c66639">#C66639</color>

SVG fillfill="#C66639"

More Orange Colors

#C66639 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

#C66639 Frequently Asked Questions

What color is #C66639?

#C66639 is a mid-tone orange — rgb(198, 102, 57) in RGB and hsl(19, 55%, 50%) in HSL. It carries no registered color name of its own; the closest named color is Copper Red (#CB6D51), which is visibly different at a CIE76 distance of 10.15.

What is the RGB value of #C66639?

#C66639 is rgb(198, 102, 57) — red 198, green 102, and blue 57 on the 0-255 scale.

What is the CMYK value of #C66639?

#C66639 converts to approximately cmyk(0%, 48%, 71%, 22%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #C66639 be black or white?

Black text is the more readable choice. #C66639 scores 3.92:1 against white and 5.36:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #C66639 as a CSS color keyword?

No. #C66639 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 13.3, which is visibly different.

Open #C66639 in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

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