#81789B Color

#81789B is rgb(129, 120, 155) in RGB, hsl(255, 15%, 54%) in HSL, and about cmyk(17%, 23%, 0%, 39%) in CMYK. It has no registered color name of its own — the closest is Rhythm (#777696), very hard to tell apart at ΔE 3.76. Black text is the more readable choice on this background.

#81789B

HEX#81789B

RGBrgb(129, 120, 155)

HSLhsl(255, 15%, 54%)

HSVhsv(255, 23%, 61%)

CMYKcmyk(17%, 23%, 0%, 39%)

OKLCHoklch(59.3% 0.054 296.5)

LABlab(52.21% 9.14 -17.67)

LCHlch(52.21% 19.90 297.36)

What #81789B 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 #81789B, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Rhythm#777696ΔE 3.76 Cool Gray#8C92ACΔE 11.58 Dark Blue-gray#666699ΔE 12.76 Old Lavender#796878ΔE 12.89 Shadow Blue#778BA5ΔE 12.92 Glossy Grape#AB92B3ΔE 13.14

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

#81789B Channel Values

How #81789B 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 129 · G 120 · B 155	8-bit channels as sent to the display
HSL	H 255° · S 15% · L 54%	Easiest model for building lighter and darker variants
HSV	H 255° · S 23% · V 61%	Matches the picker in most design tools
CMYK	C 17% · M 23% · Y 0% · K 39%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	4.12:1 vs white · 5.09:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #81789B 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 text4.12:1AA normal AA large AAA normal

TextBlack text5.09:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #81789B in the contrast checker.

Colors That Go With #81789B

Pairings derived from color-wheel relationships. The complementary color sits opposite #81789B; 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 #81789B

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 #81789B.

How #81789B 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#81789B

Protanopia#7A7A9B

Protanomaly#7D799B

Deuteranopia#7B7B9B

Deuteranomaly#7D7A9B

Tritanopia#7C7D7D

Tritanomaly#7E7B8A

Achromatopsia#7D7D7D

Test a full palette in the color blindness simulator.

Using #81789B in Code

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

CSS custom property--color-81789b: #81789B;

CSS backgroundbackground-color: #81789B;

Tailwind configcolors: { 'color-81789b': '#81789B' }

SwiftUIColor(red: 0.506, green: 0.471, blue: 0.608)

Android XML<color name="color_81789b">#81789B</color>

SVG fillfill="#81789B"

More Purple Colors

#81789B 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

#81789B Frequently Asked Questions

What color is #81789B?

#81789B is a mid-tone purple — rgb(129, 120, 155) in RGB and hsl(255, 15%, 54%) in HSL. It carries no registered color name of its own; the closest named color is Rhythm (#777696), which is very hard to tell apart at a CIE76 distance of 3.76.

What is the RGB value of #81789B?

#81789B is rgb(129, 120, 155) — red 129, green 120, and blue 155 on the 0-255 scale.

What is the CMYK value of #81789B?

#81789B converts to approximately cmyk(17%, 23%, 0%, 39%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #81789B be black or white?

Black text is the more readable choice. #81789B scores 4.12:1 against white and 5.09:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #81789B as a CSS color keyword?

No. #81789B 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 slategray (#708090) at a CIE76 distance of 14.24, which is visibly different.

Open #81789B 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.