What Makes a Good Logo (And What Makes a Bad One Unfixable)

A logo is the most scrutinised, most debated, and most misunderstood element in any brand identity. Clients spend more time agonising over their logo than over their entire website content, and designers spend more time revising logos than any other single deliverable. Yet despite all this attention, the principles that separate a good logo from a bad one are remarkably clear and remarkably consistent.

This isn't about how to design a logo (that's a separate discipline). This is about how to evaluate a logo, whether it's one you're designing, one a client brings to you, or one you're trying to make work within a Squarespace site. These principles will help you give informed feedback, identify problems before they become embedded in a brand, and understand why some logos work across every context while others fall apart the moment they leave Illustrator.

The Five Characteristics of an Effective Logo

Design literature has converged on five qualities that consistently define successful logos. Not trends. Not preferences. Structural qualities that determine whether a logo functions well across the range of contexts where it needs to appear.

Simple. The most effective logos are reductively simple. Nike's swoosh. Apple's apple. McDonald's arches. Target's target. These logos contain the absolute minimum visual information needed to be recognisable and meaningful. Simplicity is functional, not just aesthetic: a simple logo is easier to recognise at a glance, easier to remember, easier to reproduce across media, and easier to scale from a favicon to a billboard.

Complexity is the most common problem with amateur and low-budget logos. Gradients, drop shadows, multiple font styles, detailed illustrations, and intricate patterns all reduce a logo's effectiveness by making it harder to process quickly and harder to reproduce consistently. If a logo can't be drawn from memory by someone who's seen it a few times, it's probably too complex.

Memorable. A good logo sticks in the mind after a brief exposure. Memorability comes from distinctiveness: the logo looks like itself and not like other logos. This sounds obvious, but the number of businesses operating with generic logos (a swoosh that isn't Nike, an abstract globe, a house inside a shield for every estate agent in the country) suggests that distinctiveness is harder to achieve than it sounds.

The test for memorability: show someone the logo for five seconds, then show them ten other logos and ask them to identify yours. If they can't, the logo isn't distinctive enough. It's been absorbed into the visual noise of similar marks.

Versatile. A logo must work across an enormous range of contexts. On a website header at 120px wide. As a favicon at 32x32 pixels. On a business card. On a shop front. On dark backgrounds, light backgrounds, coloured backgrounds, and photograph overlays. In full colour, single colour, and black and white. On screen and in print. Embroidered on a polo shirt. Engraved on a pen.

Versatility requires two things: simplicity (complex logos lose detail at small sizes) and a responsive logo system. A responsive logo system provides multiple versions of the logo for different contexts: the full logo (mark plus wordmark) for large applications, the mark alone for small applications and social media avatars, and a simplified or alternative version for extreme constraints like favicons.

Squarespace sites specifically need the logo to work at header scale (typically 200 to 400px wide, depending on the template), as a browser favicon (16x16 or 32x32px), as a social sharing image (when the URL is shared on social platforms), and at mobile header scale (smaller than desktop, often significantly so). A logo that only looks good at one size is a problem you'll encounter during every build.

Appropriate. A logo should feel appropriate for the industry, audience, and brand personality it represents. "Appropriate" doesn't mean "literal." The Apple logo isn't a computer. The Amazon logo isn't a warehouse. The Nike swoosh isn't a shoe. Appropriateness is about tone and feeling, not illustration.

A playful, rounded, colourful logo is appropriate for a children's brand and inappropriate for a law firm. A stark, minimal, monochrome logo is appropriate for a high-end architecture practice and inappropriate for a birthday party planner. The logo's visual language (colour, shape, weight, style) should align with the expectations and preferences of the target audience.

This is where many DIY logos go wrong. A client creates a logo they personally like, without considering whether it communicates the right message to their audience. A personal trainer who loves ornate script fonts might create a logo that communicates "wedding calligrapher" rather than "fitness professional." The logo needs to work for the audience, not just for the owner.

Timeless. The most effective logos endure for decades with minimal modification. The Coca-Cola script has been substantially the same since 1887. The IBM logo has been the same since 1972. The Shell logo has evolved gradually but recognisably since 1900. These logos avoided design trends, which is why they don't look dated.

A logo that follows the current trend (gradient meshes in 2023, 3D chrome in 2024) will look of-its-moment for two years and then look dated for twenty. The best logos use fundamental design principles, clean geometry, strong contrast, clear shapes, that don't have an expiration date.

Logo Types

Logos fall into several structural categories, and understanding these helps when evaluating or commissioning a logo.

Wordmarks (or logotypes) are the brand name set in a distinctive typeface, sometimes with custom modifications to the letterforms. Google, Coca-Cola, FedEx, and Visa are wordmarks. These work best when the brand name is short, distinctive, and the letterforms themselves can carry personality. They're the simplest logo type to implement on web and are usually the most versatile across contexts.

Lettermarks (or monograms) use the brand's initials rather than the full name. IBM, HBO, NASA, and BBC are lettermarks. These work when the brand name is long or cumbersome (International Business Machines becomes IBM) or when the initials are already well-known. They require the audience to already know what the letters stand for, which limits their effectiveness for new or unknown brands.

Brandmarks (or pictorial marks) are standalone symbols or icons. Apple's apple, Twitter's bird, Target's bullseye. These are the most powerful logo type when they work, because they transcend language and can be recognised without any text. But they require massive brand awareness to function alone, which means they're not appropriate for most small businesses. A standalone symbol for a brand nobody recognises is just a mystery.

Combination marks pair a symbol with a wordmark. Adidas, Burger King, Lacoste, and Dorset Cereals all use combination marks. This is the most practical logo type for most businesses, because the wordmark provides identification (the name) while the symbol provides memorability and a standalone element for small-scale use (social avatars, favicons, app icons).

Emblems enclose the brand name within a symbol or badge. Starbucks, Harley-Davidson, and many universities use emblems. These feel established, traditional, and institutional. They work well for brands with heritage or authority. Their weakness is scalability: the detail within an emblem often becomes illegible at small sizes, requiring a simplified version for digital use.

Colour in Logo Design

Logo colour is strategic, not decorative.

The primary version of a logo should work in a single colour (typically black). This is the foundation. If the logo doesn't work in black on white, adding colour won't fix it. It'll just disguise the structural weakness.

From the single-colour foundation, colour is added to enhance recognition, communicate personality, and differentiate from competitors. The colour choices should consider the industry landscape (if every competitor uses blue, using orange creates instant differentiation), the brand's personality (red for energy and urgency, blue for trust and calm, green for nature and health, purple for luxury and creativity), and practical requirements (will this colour work on the client's existing marketing materials, vehicle livery, uniforms?).

For web design specifically, the logo colour needs to work against the site's background colour on both desktop and mobile, in both the standard header and the mobile hamburger menu overlay. A dark logo on a light header is straightforward. A dark logo on a transparent header over a hero image requires testing against every possible image to ensure readability. Many Squarespace templates offer different logo colours for transparent headers versus solid headers, which is worth configuring even if the design doesn't seem to need it at launch.

Common Logo Problems (And Whether They're Fixable)

Some logo problems can be solved with minor refinement. Others are structural and require a redesign.

Too detailed. If the logo has fine lines, small text, intricate patterns, or photographic elements, it will fail at small sizes. This is fixable if the detail can be removed to create a simplified version. It's unfixable if the detail is the entire point of the logo (a detailed illustration that loses its meaning when simplified).

Poor font choice. A logo using a default system font (Calibri, Arial, Times New Roman) or a heavily overused free font (Lobster, Pacifico, Bebas Neue) looks generic. This is fixable by changing the typeface, though the client may be attached to the current one.

Too many colours. A logo using four or five colours is expensive to reproduce in print, difficult to manage across digital contexts, and visually complex. This is fixable by reducing the palette.

Relies on effects. Gradients, shadows, glows, and 3D effects that are integral to the logo's appearance make it inflexible. These are fixable if a flat version can be created that works independently.

Conceptually confused. A logo that tries to communicate too many ideas (a coffee cup combined with a book combined with a Wi-Fi symbol for a cafe with a library and internet) is structurally broken. This requires a redesign, because the problem isn't execution. It's the concept.

Doesn't work at favicon size. If the logo can't be reduced to 32x32 pixels and still be recognisable, it needs either a simplified version or a redesign. This is the most common logo problem in web design, and the solution is usually to create a secondary mark (the icon from a combination mark, or an initial letter) specifically for small-scale digital use.

Evaluating a Client's Logo

When a client brings you an existing logo for their Squarespace build, evaluate it against the five characteristics above. If it passes all five, build around it confidently. If it fails on one or two, discuss refinements. If it fails on three or more, have the harder conversation about whether a rebrand should happen before or alongside the web project.

Frame this conversation around function, not taste. "I think the logo could be improved" is a subjective opinion the client can dismiss. "The logo's fine lines aren't visible at the size it'll appear in the mobile header, and it doesn't have a simplified version we can use as a favicon" is a functional problem that needs a solution.

Good logos make web design easier. Every colour palette, font pairing, and layout decision can reference the logo as a starting point. Bad logos make web design harder, because you're trying to build a cohesive brand experience around a mark that doesn't hold up under the demands of modern digital contexts.

Understanding what makes the difference is one of the most valuable skills a web designer can develop, because it transforms the logo from something you passively receive and place in the header into something you can actively evaluate, advise on, and design around with confidence.