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#5121B0 Color

#5121B0 is rgb(81, 33, 176) in RGB, hsl(260, 68%, 41%) in HSL, and about cmyk(54%, 81%, 0%, 31%) in CMYK. It has no registered color name of its own — the closest is Websafe Indigo (#330099), clearly related but distinguishable side by side at ΔE 9.95. White text is the more readable choice on this background.

#5121B0
HEX#5121B0
RGBrgb(81, 33, 176)
HSLhsl(260, 68%, 41%)
HSVhsv(260, 81%, 69%)
CMYKcmyk(54%, 81%, 0%, 31%)
OKLCHoklch(41.5% 0.204 289.4)
LABlab(28.26% 47.14 -68.42)
LCHlch(28.26% 83.09 304.56)

What #5121B0 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 #5121B0, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Websafe Indigo#330099ΔE 9.95Iridescent Indigo#3C32CDΔE 12.51Blue Ribbon#0B10A2ΔE 12.96Blue (Pantone)#0018A8ΔE 13.12Metallic Violet#5B0A91ΔE 13.58Zaffer (Zaffre)#0014A8ΔE 13.64

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

#5121B0 Channel Values

How #5121B0 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 81 · G 33 · B 1768-bit channels as sent to the display
HSLH 260° · S 68% · L 41%Easiest model for building lighter and darker variants
HSVH 260° · S 81% · V 69%Matches the picker in most design tools
CMYKC 54% · M 81% · Y 0% · K 31%Approximate ink mix; confirm with an ICC profile before printing
Luminance9.57:1 vs white · 2.19:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #5121B0 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 text9.57:1AA normal AA large AAA normal
Fails AABlack text2.19:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #5121B0 in the contrast checker.

Colors That Go With #5121B0

Pairings derived from color-wheel relationships. The complementary color sits opposite #5121B0; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#5121B0
Complementary
#80B021
Analogous
#2139B0
Analogous
#9821B0
Triadic
#B05121
Triadic
#21B051
Split comp.
#B09821
Split comp.
#39B021

Tints & Shades of #5121B0

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

#6128D2
#7847DC
#9269E2
#AE90EA
#C7B2F0
#E0D4F7

Shades

#471D9A
#3B1881
#31146B
#271056
#1E0C40
#120727

Want a full 50-950 ramp with semantic roles? Generate design tokens from #5121B0.

How #5121B0 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#5121B0
Protanopia#2D2DB0
Protanomaly#3E29B0
Deuteranopia#3636B0
Deuteranomaly#432FB0
Tritanopia#2F4A4A
Tritanomaly#3F3D80
Achromatopsia#454545

Test a full palette in the color blindness simulator.

Using #5121B0 in Code

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

CSS custom property--color-5121b0: #5121B0;
CSS backgroundbackground-color: #5121B0;
Tailwind configcolors: { 'color-5121b0': '#5121B0' }
SwiftUIColor(red: 0.318, green: 0.129, blue: 0.690)
Android XML<color name="color_5121b0">#5121B0</color>
SVG fillfill="#5121B0"

More Purple Colors

#5121B0 sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

150024fdf8ff170b22fdf4ff1b0d35faf5ff1d0731fae8ff1e0033f6cfff20002ef3e8ff3000524020605414906600cc7008e78806ce9900cca11fffb19cd9c27affcebeefe0b2eb

#5121B0 Frequently Asked Questions

What color is #5121B0?

#5121B0 is a mid-tone purple — rgb(81, 33, 176) in RGB and hsl(260, 68%, 41%) in HSL. It carries no registered color name of its own; the closest named color is Websafe Indigo (#330099), which is clearly related but distinguishable side by side at a CIE76 distance of 9.95.

What is the RGB value of #5121B0?

#5121B0 is rgb(81, 33, 176) — red 81, green 33, and blue 176 on the 0-255 scale.

What is the CMYK value of #5121B0?

#5121B0 converts to approximately cmyk(54%, 81%, 0%, 31%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #5121B0 be black or white?

White text is the more readable choice. #5121B0 scores 9.57:1 against white and 2.19:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #5121B0 as a CSS color keyword?

No. #5121B0 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 darkblue (#00008B) at a CIE76 distance of 15.94, which is visibly different.

Open #5121B0 in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

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