bgcolor.com valid
bgcolor
Colors and more: 100+ free color tools plus a blog on color theory. Background picker, palette generators, WCAG contrast checkers and HEX/RGB/HSL/OKLCH converters.
For agents: 100+ free color tools: background picker, palette generator, WCAG contrast checker, HEX/RGB/HSL/OKLCH converter, CSS gradient generator, and a color theory blog
color pickerpalette generatorwcag contrast checkercolor convertercss gradient generator
- Authority
- 53 reach 8 · trust 5 · quality 25 · freshness 15
- Tier
- listed
- llms.txt
- https://bgcolor.com/llms.txt
- llms-full.txt
- https://bgcolor.com/llms-full.txt
- Sections
- 5
- Links
- 175
- Size
- 27970 bytes
- Popularity rank
- #291722
- Country
- United States
- Categories
- Design · Developer tools
- For agents
- Informational: content or services for people, nothing to operate
- Audience
- mixed · agents can: search content · en
- First seen
- 2026-10-19T10:42:30.287Z
- Last checked
- 2026-10-20T23:55:40.672Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-20T23:55:33.458Z. Cached copy · Source on bgcolor.com
# bgcolor
> Colors and more: 100+ free color tools plus a blog on color theory. Background picker, palette generators, WCAG contrast checkers and HEX/RGB/HSL/OKLCH converters.
bgcolor is a free, static, privacy-respecting color studio at https://bgcolor.com. Every tool runs entirely in the visitor's browser: there is no backend, no account, no analytics and no telemetry. Images dropped into the palette, duotone and overlay tools are decoded locally and never uploaded.
The site opens on a background color picker, because on a web page one color covers more surface area than everything else combined and every other color decision is downstream of it. Whatever background you choose re-themes the entire site live, using the same derivation logic the tools expose.
All 103 tools share one color engine. Conversions round-trip through linear sRGB, CIE XYZ and OKLab. Contrast is reported with both the WCAG 2.2 ratio and the APCA lightness model. Hue rotations happen in OKLCH so equal angles look equally different. Color vision simulation uses the standard LMS cone-response transform.
## Key pages
- [Background color picker](https://bgcolor.com/): the main tool and the site's home page.
- [All tools](https://bgcolor.com/tools/): the full index of 103 tools across 6 categories.
- [Blog](https://bgcolor.com/blog/): 21 articles on color theory for web design.
- [Learn](https://bgcolor.com/learn/): six guided paths pairing a concept with the tool that demonstrates it.
- [Color glossary](https://bgcolor.com/glossary/): 38 terms defined, each with a one-sentence definition and a stable anchor.
- [About](https://bgcolor.com/about/): what the site is, how it works, and its privacy posture.
- [Full text](https://bgcolor.com/llms-full.txt): every definition, tool description and article summary in one file.
## Tools
### [Background Color Tools](https://bgcolor.com/tools/backgrounds/)
Pick, pair and pressure-test the color behind everything else.
- [Background Color Picker](https://bgcolor.com/tools/background-picker/): The main event — pick a background and watch a whole interface build itself around it.
- [Surface System Generator](https://bgcolor.com/tools/surface-system/): One background in, a full elevation stack out.
- [Readable Text Finder](https://bgcolor.com/tools/text-on-background/): Given this background, what text color actually works?
- [Dark Mode Generator](https://bgcolor.com/tools/dark-mode-generator/): Turn a light theme into a dark one that does not look inverted.
- [Overlay & Scrim Calculator](https://bgcolor.com/tools/overlay-calculator/): How dark does the scrim need to be for the text to survive?
- [CSS Pattern Backgrounds](https://bgcolor.com/tools/pattern-backgrounds/): Dots, grids, stripes and checks — pure CSS, no images.
- [Noise & Grain Generator](https://bgcolor.com/tools/noise-texture/): Kill the banding, add the film grain.
### [Color Palette Generators](https://bgcolor.com/tools/palettes/)
Build a set of colors that belong
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Machine-readable: GET /v1/resolve?q=bgcolor.com · GET /v1/domain/bgcolor.com · this page as Accept: application/json or text/markdown · MCP lookup_domain
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