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Tuna

#343741 aka “Elastic Dark” by Elastic

Tuna is a cool dark color with the hex code #343741. Also known as "Elastic Dark" by Elastic . This muted hue can be represented as RGB 52, 55, 65 in digital design or CMYK 20%, 15%, 0%, 75% 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.

Tuna color values

HEX
#343741
RGB
52, 55, 65
HSL
226°, 11%, 23%
CMYK
20, 15, 0, 75

Shades & tints

Darker Lighter

About this color

Tuna sits at 226° on the color wheel with 11% saturation and 23% lightness, placing it in the blue segment of the spectrum. Its restrained 11% saturation keeps the hue subtle — present but not assertive, making it easy to layer over or under more expressive colors. The lower lightness gives it weight and depth, lending gravity to any palette it enters.

In digital environments, Tuna is rendered as rgb(52, 55, 65), where the blue channel is highest at 65, though it sits close to the other channels. Low saturation at this depth produces the kind of sophisticated, near-neutral dark that works for application shells, sidebars, and dark-mode base layers.

For print, Tuna translates to a CMYK breakdown of 20C 15M 0Y 75K. A substantial black component (75%) 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 Elastic Dark.

Color harmonies

Complementary

Split-Complementary

How to use Tuna

CSS Variable 

:root {
  --brand-primary: #343741;
  --brand-primary-rgb: 52, 55, 65;
}

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

Tailwind Config 

colors: {
  brand: '#343741',
}

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

Print Design (CMYK) 

C: 20%
M: 15%
Y: 0%
K: 75%

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

RGB for Screens 

rgb(52, 55, 65)
rgba(52, 55, 65, 0.8)

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

Brands using Tuna

1 brand uses this color in their identity

Elastic

Technology • In-house Elastic

Frequently asked questions

What color is #343741?
#343741 is Tuna, a cool dark color with RGB values of 52, 55, 65. It has a hue of 226°, 11% saturation, and 23% lightness in the HSL color space.
What is the RGB value of #343741?
The RGB color code for #343741 is rgb(52, 55, 65). This means it contains 52 red, 55 green, and 65 blue in the RGB color model.
Is Tuna a warm or cool color?
Tuna (#343741) is a cool color with a hue between 120-300° on the color wheel.
How do I use #343741 in CSS?
You can use #343741 in CSS with: background-color: #343741; or color: #343741; or as an RGB value: rgb(52, 55, 65). For print design, use CMYK: 20%, 15%, 0%, 75%.

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