#B51CA3 Color

#B51CA3 is rgb(181, 28, 163) in RGB, hsl(307, 73%, 41%) in HSL, and about cmyk(0%, 85%, 10%, 29%) in CMYK. It has no registered color name of its own — the closest is Byzantine (#BD33A4), clearly related but distinguishable side by side at ΔE 7.46. White text is the more readable choice on this background.

#B51CA3

HEX#B51CA3

RGBrgb(181, 28, 163)

HSLhsl(307, 73%, 41%)

HSVhsv(307, 85%, 71%)

CMYKcmyk(0%, 85%, 10%, 29%)

OKLCHoklch(54.1% 0.225 334)

LABlab(43.26% 66.90 -35.49)

LCHlch(43.26% 75.73 332.05)

What #B51CA3 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 #B51CA3, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Byzantine#BD33A4ΔE 7.46 Dark Magenta#8B008BΔE 13.37 Steel Pink#CC33CCΔE 14.3 Mardi Gras#880085ΔE 14.54 Mauveine#8D029BΔE 15.12 Deep Fuchsia#C154C1ΔE 15.77

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

#B51CA3 Channel Values

How #B51CA3 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 181 · G 28 · B 163	8-bit channels as sent to the display
HSL	H 307° · S 73% · L 41%	Easiest model for building lighter and darker variants
HSV	H 307° · S 85% · V 71%	Matches the picker in most design tools
CMYK	C 0% · M 85% · Y 10% · K 29%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	5.74:1 vs white · 3.66:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #B51CA3 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 text5.74:1AA normal AA large AAA normal

Fails AABlack text3.66:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #B51CA3 in the contrast checker.

Colors That Go With #B51CA3

Pairings derived from color-wheel relationships. The complementary color sits opposite #B51CA3; 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 #B51CA3

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 #B51CA3.

How #B51CA3 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#B51CA3

Protanopia#5454A3

Protanomaly#8644A3

Deuteranopia#7070A0

Deuteranomaly#9159A1

Tritanopia#AD4343

Tritanomaly#B03776

Achromatopsia#666666

Test a full palette in the color blindness simulator.

Using #B51CA3 in Code

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

CSS custom property--color-b51ca3: #B51CA3;

CSS backgroundbackground-color: #B51CA3;

Tailwind configcolors: { 'color-b51ca3': '#B51CA3' }

SwiftUIColor(red: 0.710, green: 0.110, blue: 0.639)

Android XML<color name="color_b51ca3">#B51CA3</color>

SVG fillfill="#B51CA3"

More Pink Colors

#B51CA3 sits in the pink family. These are its neighbours across that family's full range, each with its own breakdown.

200e15 fff5ff 240024 fff5f8 2e051f fff0ff 2f1d2f fff0f6 301934 fff0f5 330033 ffe0f0 57001d 754875 940094 a800b7 c43162 d07cd0 e0115f e936a7 f38fa9 fb64b6 ff0a85 ff70b8

#B51CA3 Frequently Asked Questions

What color is #B51CA3?

#B51CA3 is a mid-tone pink — rgb(181, 28, 163) in RGB and hsl(307, 73%, 41%) in HSL. It carries no registered color name of its own; the closest named color is Byzantine (#BD33A4), which is clearly related but distinguishable side by side at a CIE76 distance of 7.46.

What is the RGB value of #B51CA3?

#B51CA3 is rgb(181, 28, 163) — red 181, green 28, and blue 163 on the 0-255 scale.

What is the CMYK value of #B51CA3?

#B51CA3 converts to approximately cmyk(0%, 85%, 10%, 29%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #B51CA3 be black or white?

White text is the more readable choice. #B51CA3 scores 5.74:1 against white and 3.66:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #B51CA3 as a CSS color keyword?

No. #B51CA3 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 darkmagenta (#8B008B) at a CIE76 distance of 13.37, which is visibly different.

Open #B51CA3 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 pink in the color library, the guide to shades of pink, or the full color library.