#66437A Color

#66437A is rgb(102, 67, 122) in RGB, hsl(278, 29%, 37%) in HSL, and about cmyk(16%, 45%, 0%, 52%) in CMYK. It has no registered color name of its own — the closest is Cyber Grape (#58427C), clearly related but distinguishable side by side at ΔE 6.04. White text is the more readable choice on this background.

#66437A

HEX#66437A

RGBrgb(102, 67, 122)

HSLhsl(278, 29%, 37%)

HSVhsv(278, 45%, 48%)

CMYKcmyk(16%, 45%, 0%, 52%)

OKLCHoklch(44.6% 0.096 312.3)

LABlab(34.31% 23.70 -25.61)

LCHlch(34.31% 34.89 312.79)

What #66437A 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 #66437A, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Cyber Grape#58427CΔE 6.04 Ultra Violet#5F4B8BΔE 8.54 Imperial#602F6BΔE 8.96 Medium Violet#65315FΔE 11.54 French Lilac#86608EΔE 13.45 Japanese Violet#5B3256ΔE 13.81

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

#66437A Channel Values

How #66437A 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 102 · G 67 · B 122	8-bit channels as sent to the display
HSL	H 278° · S 29% · L 37%	Easiest model for building lighter and darker variants
HSV	H 278° · S 45% · V 48%	Matches the picker in most design tools
CMYK	C 16% · M 45% · Y 0% · K 52%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	7.93:1 vs white · 2.65:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66437A 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.

TextWhite text7.93:1AA normal AA large AAA normal

Fails AABlack text2.65:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66437A in the contrast checker.

Colors That Go With #66437A

Pairings derived from color-wheel relationships. The complementary color sits opposite #66437A; 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 #66437A

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 #66437A.

How #66437A 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#66437A

Protanopia#4A4A7A

Protanomaly#57487A

Deuteranopia#515179

Deuteranomaly#5A4C7A

Tritanopia#5F4D4D

Tritanomaly#624962

Achromatopsia#515151

Test a full palette in the color blindness simulator.

Using #66437A in Code

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

CSS custom property--color-66437a: #66437A;

CSS backgroundbackground-color: #66437A;

Tailwind configcolors: { 'color-66437a': '#66437A' }

SwiftUIColor(red: 0.400, green: 0.263, blue: 0.478)

Android XML<color name="color_66437a">#66437A</color>

SVG fillfill="#66437A"

More Purple Colors

#66437A sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

150024 fdf8ff 170b22 fdf4ff 1b0d35 faf5ff 1d0731 fae8ff 1e0033 f6cfff 20002e f3e8ff 300052 402060 541490 6600cc 7008e7 8806ce 9900cc a11fff b19cd9 c27aff cebeef e0b2eb

#66437A Frequently Asked Questions

What color is #66437A?

#66437A is a dark purple — rgb(102, 67, 122) in RGB and hsl(278, 29%, 37%) in HSL. It carries no registered color name of its own; the closest named color is Cyber Grape (#58427C), which is clearly related but distinguishable side by side at a CIE76 distance of 6.04.

What is the RGB value of #66437A?

#66437A is rgb(102, 67, 122) — red 102, green 67, and blue 122 on the 0-255 scale.

What is the CMYK value of #66437A?

#66437A converts to approximately cmyk(16%, 45%, 0%, 52%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66437A be black or white?

White text is the more readable choice. #66437A scores 7.93:1 against white and 2.65:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66437A as a CSS color keyword?

No. #66437A 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 darkslateblue (#483D8B) at a CIE76 distance of 17.75, which is visibly different.

Open #66437A in a Tool

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