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Loulou

#4A154B aka “Aubergine” by Slack

Loulou is a cool dark color with the hex code #4A154B. Also known as "Aubergine" by Slack . This moderately saturated hue can be represented as RGB 74, 21, 75 in digital design or CMYK 1%, 72%, 0%, 71% for print applications. Find matching Pantone color. Currently, 1 brand uses this color in their visual identity, making it a proven choice for professional branding and web design.

Loulou color values

HEX
#4A154B
RGB
74, 21, 75
HSL
299°, 56%, 19%
CMYK
1, 72, 0, 71

Shades & tints

Darker Lighter

About this color

Loulou sits at 299° on the color wheel with 56% saturation and 19% lightness, placing it in the violet-magenta segment of the spectrum. The moderate 56% saturation gives it enough color presence to register clearly without competing for dominance in a composition. The lower lightness gives it weight and depth, lending gravity to any palette it enters.

In digital environments, Loulou is rendered as rgb(74, 21, 75), where the blue channel is highest at 75, though it sits close to the other channels. This cool mid-tone is a reliable choice for UI chrome, informational states, and contexts that call for a calm, readable presence.

For print, Loulou translates to a CMYK breakdown of 1C 72M 0Y 71K. A substantial black component (71%) anchors this color in print. The remaining ink channels supplement rather than drive the hue, which keeps the result stable across different paper stocks. In brand applications, this exact value is specified as Aubergine.

Color harmonies

Complementary

Split-Complementary

How to use Loulou

CSS Variable 

:root {
  --brand-primary: #4A154B;
  --brand-primary-rgb: 74, 21, 75;
}

Define as a CSS custom property for consistent theming across your site.

Tailwind Config 

colors: {
  brand: '#4A154B',
}

Add to your Tailwind config to use classes like bg-brand.

Print Design (CMYK) 

C: 1%
M: 72%
Y: 0%
K: 71%

Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.

RGB for Screens 

rgb(74, 21, 75)
rgba(74, 21, 75, 0.8)

Use RGB notation for compatibility or add alpha channel for transparency.

Brands using Loulou

1 brand uses this color in their identity

Slack

Technology • Michael Bierut

Brands using similar hue

2 brand s with colors near 299° on the color wheel

Nubank logo
Nubank
Instagram logo
Instagram

Frequently asked questions

What color is #4A154B?
#4A154B is Loulou, a cool dark color with RGB values of 74, 21, 75. It has a hue of 299°, 56% saturation, and 19% lightness in the HSL color space.
What is the RGB value of #4A154B?
The RGB color code for #4A154B is rgb(74, 21, 75). This means it contains 74 red, 21 green, and 75 blue in the RGB color model.
Is Loulou a warm or cool color?
Loulou (#4A154B) is a cool color with a hue between 120-300° on the color wheel.
How do I use #4A154B in CSS?
You can use #4A154B in CSS with: background-color: #4A154B; or color: #4A154B; or as an RGB value: rgb(74, 21, 75). For print design, use CMYK: 1%, 72%, 0%, 71%.

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