Color

#2100fa

#2100fa
hex#2100fa
rgbrgb(33, 0, 250)
hslhsl(248, 100%, 49%)
oklchoklch(0.452 0.304 267.4)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0723

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#d9fa00

#005cfa · #9e00fa

#fa2100 · #00fa21

Split-complementary

Open in tool →

#fa9e00 · #5cfa00

#fa005c · #d9fa00 · #00fa9e

Contrast

#2100fa as textRatioAAAA largeAAAFix
Aaon white
8.59:1passpasspassPasses AAA — no fix needed.
Aaon black
2.45:1failfailfail
  • AA: use #725cff as the text (4.69:1)
  • AAA: use #9585ff as the text (7.08:1)
  • AA: or shift the background to #bdbdbd (4.57:1)
  • AAA: or shift the background to #e8e8e8 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2100fa as the background.

Brands using this color

Fonts for this mood

#2100fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2100fa
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #2100fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2100fa-a69cc4-dfac4e-271f2d-e9ecf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md