The color studio in your browser
RGB Colors is a free, browser-based toolkit for designers and developers — pickers, converters, harmonies, gradients, image palettes and accessibility checks, all in one fast place.
Why we built this
RGB Colors started from a simple frustration: color utilities are scattered across dozens of slow, ad-covered websites. We wanted one place that loads instantly, gets the math right, and puts a copy button on every value.
Every tool runs entirely in your browser. Conversions use the standard sRGB ↔ HSL algorithms and contrast ratios follow the WCAG 2.x relative-luminance formula, so the numbers you copy are the same ones you would calculate by hand. There are no accounts, no tracking pixels and nothing to install.
Since launch we have grown from a single converter into a full studio — palettes, harmonies, gradients, image tools and a named-color library — while keeping the same promise: open a page, get a precise answer, copy it, move on.
What's inside
- Color picker, RGB ↔ Hex ↔ HSL and CMYK converters
- Harmony color wheel, color schemes hub, gradients and a color mixer
- Shades, tints, tones and Tailwind scale generators
- Image color picker, palette extractor and converter
- WCAG contrast checker and colorblindness simulator
- Named-color library, brand colors and reference charts
A few places to start
Not sure which tool you need? These four cover most day-to-day color work.
How we build
Fast by default
Every tool is its own lightweight page, so results appear the moment you open them.
Private by design
Your colors and images never leave the browser. No accounts, no uploads, no profiling.
Accurate math
Standard sRGB ↔ HSL conversions and the WCAG 2.x relative-luminance contrast formula.
Free and open
No paywalls, no sign-up walls and no limits — copy anything the tools produce.
Ideas, bugs or requests?
Tell us what would make the toolkit better — we read every message and usually reply within a couple of days.