#3C0366 Color

#3C0366 is rgb(60, 3, 102) in RGB, hsl(275, 94%, 21%) in HSL, and about cmyk(41%, 97%, 0%, 60%) in CMYK. It has no registered color name of its own — the closest is Persian Indigo (#32127A), clearly related but distinguishable side by side at ΔE 9.96. White text is the more readable choice on this background.

#3C0366

HEX#3C0366

RGBrgb(60, 3, 102)

HSLhsl(275, 94%, 21%)

HSVhsv(275, 97%, 40%)

CMYKcmyk(41%, 97%, 0%, 60%)

OKLCHoklch(29.1% 0.149 303)

LABlab(14.82% 38.87 -44.36)

LCHlch(14.82% 58.98 311.22)

What #3C0366 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 #3C0366, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Persian Indigo#32127AΔE 9.96 Petunia#470659ΔE 11.13 Spanish Violet#4C2882ΔE 12.18 KSU Purple#512888ΔE 12.4 Indigo#4B0082ΔE 13.75 Midnight Blue#191970ΔE 14.48

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

#3C0366 Channel Values

How #3C0366 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 60 · G 3 · B 102	8-bit channels as sent to the display
HSL	H 275° · S 94% · L 21%	Easiest model for building lighter and darker variants
HSV	H 275° · S 97% · V 40%	Matches the picker in most design tools
CMYK	C 41% · M 97% · Y 0% · K 60%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	15.03:1 vs white · 1.4:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #3C0366 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 text15.03:1AA normal AA large AAA normal

Fails AABlack text1.4:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #3C0366 in the contrast checker.

Colors That Go With #3C0366

Pairings derived from color-wheel relationships. The complementary color sits opposite #3C0366; 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 #3C0366

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 #3C0366.

How #3C0366 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#3C0366

Protanopia#171766

Protanomaly#2A1166

Deuteranopia#212166

Deuteranomaly#2E1966

Tritanopia#2F2424

Tritanomaly#351B47

Achromatopsia#272727

Test a full palette in the color blindness simulator.

Using #3C0366 in Code

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

CSS custom property--color-3c0366: #3C0366;

CSS backgroundbackground-color: #3C0366;

Tailwind configcolors: { 'color-3c0366': '#3C0366' }

SwiftUIColor(red: 0.235, green: 0.012, blue: 0.400)

Android XML<color name="color_3c0366">#3C0366</color>

SVG fillfill="#3C0366"

More Purple Colors

#3C0366 sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

3d1f7a 390061 3f00ff 36004d 4000ff 341146 402060 3300cc 410070 330099 410f70 330066 4d179a 5f4b8b 6e00c0 8100b8 9457eb 9e7bb5 ad34cb bd24ff cc99ff ddd2f4 f2dff7 220b2d

#3C0366 Frequently Asked Questions

What color is #3C0366?

#3C0366 is a dark purple — rgb(60, 3, 102) in RGB and hsl(275, 94%, 21%) in HSL. It carries no registered color name of its own; the closest named color is Persian Indigo (#32127A), which is clearly related but distinguishable side by side at a CIE76 distance of 9.96.

What is the RGB value of #3C0366?

#3C0366 is rgb(60, 3, 102) — red 60, green 3, and blue 102 on the 0-255 scale.

What is the CMYK value of #3C0366?

#3C0366 converts to approximately cmyk(41%, 97%, 0%, 60%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #3C0366 be black or white?

White text is the more readable choice. #3C0366 scores 15.03:1 against white and 1.4:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #3C0366 as a CSS color keyword?

No. #3C0366 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 indigo (#4B0082) at a CIE76 distance of 13.75, which is visibly different.

Open #3C0366 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 purple in the color library, the guide to shades of purple, or the full color library.