Coolors Alternatives 2025: Free Color Palette Tools Side-by-Side

What Coolors Does Well (and Where It Falls Short)

Coolors' strengths:

• Fast palette exploration via keyboard shortcut (spacebar generates, lock keeps a color)
• Large community gallery for inspiration browsing
• Gradient generator (with pro plan)
• Color picker with hex/RGB/HSL display
• Export to image, PDF, CSS (some features pro-gated)

Coolors' limitations:

• The "random generate" model produces palettes without any color theory basis — you are essentially rolling dice until something looks good
• No WCAG contrast checker — you cannot verify whether palette combinations are accessible
• No format conversion (CMYK to RGB, HSL to hex, etc.)
• No color blindness simulation for the palette you are working with
• Pro plan required for saving unlimited palettes, collaboration, and many exports
• Account required to save any palette permanently

Who benefits from alternatives: Designers who need WCAG-compliant palettes, developers who need CSS output and format conversion, teams who want a privacy-first tool with no account, and anyone who generates palettes based on color theory (complementary, analogous, triadic) rather than random exploration.

Best Alternative for Color Theory Palettes: LevnTools Palette Generator

LevnTools' palette generator starts from color theory rather than random generation. Enter any base color in hex, RGB, or HSL, and choose your harmony type:

• Complementary — 5 colors built around the 180° opposite pair
• Analogous — 5 adjacent-hue colors for harmonic, cohesive palettes
• Triadic — 3 evenly-spaced hues (120° apart) with tonal variations
• Split-complementary — a softer take on complementary

Every generated color is shown with its hex, RGB, and HSL code. No account needed. No ads. All processing is client-side — nothing is sent to a server.

vs Coolors: LevnTools generates palettes with mathematical color theory backing. Coolors' random generator does not use harmonic relationships unless you use its "explore" view.

Best for: Designers starting from a brand seed color and needing a theoretically consistent palette.

Best Alternative for Accessibility: WCAG Contrast Checker

Coolors' free tier does not include WCAG contrast checking. Knowing whether your text/background pair passes 4.5:1 (AA) or 7:1 (AAA) is essential for any interface used by real users.

LevnTools' contrast checker accepts any two colors (hex, RGB, or HSL), calculates the relative luminance of each, computes the ratio, and shows pass/fail for both AA and AAA at normal and large text sizes. It also shows the ratio for UI components (3:1 threshold per WCAG 1.4.11).

vs Coolors Pro: Coolors' pro plan includes a basic contrast checker, but LevnTools' is free, more detailed (shows exact ratio + component threshold), and processes locally.

vs WebAIM Contrast Checker: WebAIM's tool is the industry-standard reference, but it only accepts hex. LevnTools accepts hex, RGB, and HSL natively.

Best for: Developers verifying text color choices during implementation; designers building accessible design system tokens.

Best Alternative for Color Scales: Shades Generator

Coolors does not generate systematic tint/shade scales — it generates 5-color palettes. For design systems, you need a 10-step scale for each hue.

LevnTools' shades generator takes any seed color and outputs a complete 10-step scale from near-white to near-black, preserving the hue and saturation while varying lightness. Output includes hex codes and HSL values for each step, with a copy button for instant use.

vs Tailwind's color palette: Tailwind ships a fixed color palette. If your brand color is not in Tailwind's defaults, you need a custom scale. LevnTools generates that custom scale in seconds.

vs Tints.dev: Tints.dev also generates scales but outputs only hex. LevnTools outputs both hex and HSL.

Best for: Front-end developers building a custom Tailwind theme or CSS custom property system.

Best Alternative for Format Conversion: Format Converter

Coolors shows a color in multiple formats, but you cannot paste a CMYK value or an HSL string and convert it to the format you need. LevnTools' format converter handles all directions:

• Hex → RGB, HSL, HSB
• RGB → Hex, HSL
• HSL → Hex, RGB
• CMYK → RGB, Hex

Paste in any format, get all others instantly. Useful when a brand guide provides a Pantone or CMYK value for print and you need the web equivalent.

vs CSS color converter extensions: Browser extensions need installation and access to your pages. LevnTools requires no installation, no account, and no file access.

Best for: Developers and designers who receive brand colors in print formats (CMYK, Pantone) and need CSS-ready values.

Best Alternative for CSS Gradients: Gradient Generator

Coolors Pro includes a gradient generator. LevnTools offers a free CSS gradient generator that outputs production-ready linear-gradient() and radial-gradient() CSS strings.

Set your colors (any number of stops), adjust direction or shape, and copy the CSS directly. The output is immediately usable in a stylesheet with no processing needed.

vs CSS Gradient (cssgradient.io): cssgradient.io is a popular dedicated tool. LevnTools' gradient generator is integrated with the same color format inputs as the rest of the color toolset — paste the hex you just converted or the color you just picked, without leaving the same browser tab.

Best for: Front-end developers needing gradient CSS for backgrounds, hero sections, or button hover states.

Best Alternative for Color Blindness Simulation: Blindness Simulator

Coolors does not simulate color blindness. LevnTools' color blindness simulator shows how any color — or your full palette — appears across 8 vision types:

• Deuteranopia (red-green, green-weak — most common, ~5% of males)
• Protanopia (red-green, red-weak)
• Tritanopia (blue-yellow)
• Achromatopsia (complete greyscale vision)
• And 4 partial (anomalous trichromacy) variants

This is essential for ensuring semantic state colors (success green vs error red) are distinguishable without relying solely on hue.

vs Who Can Use (whocanuse.com): Who Can Use combines contrast and color blindness checks in a single view for specific text/background combinations. LevnTools' simulator is better for whole-palette overview; Who Can Use is better for specific text-on-background evaluation.

Best for: Designers and QA engineers validating that color-coded UI (status badges, charts, form validation) is accessible to color-blind users.

Summary: Which Alternative to Use

Bottom line: Coolors is excellent for visual inspiration and random exploration. LevnTools is better for structured, code-ready, accessibility-aware color work — and everything is free, requires no account, and runs entirely in the browser.