Color

#210bea

#210bea
hex#210bea
rgbrgb(33, 11, 234)
hslhsl(246, 91%, 48%)
oklchoklch(0.435 0.285 267.9)
Closest name: Burning Ultrablue (#150aec)Relative luminance 0.065

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d4ea0b

#0b64ea · #910bea

#ea210b · #0bea21

Split-complementary

Open in tool →

#ea910b · #64ea0b

#ea0b64 · #d4ea0b · #0bea91

Contrast

#210bea as textRatioAAAA largeAAAFix
Aaon white
9.13:1passpasspassPasses AAA — no fix needed.
Aaon black
2.3:1failfailfail
  • AA: use #6e5ef7 as the text (4.61:1)
  • AAA: use #958af9 as the text (7.28:1)
  • AA: or shift the background to #b8b8b8 (4.6:1)
  • AAA: or shift the background to #e3e3e3 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #210bea as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#210bea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #210bea
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 #210bea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/210bea-a59cc4-dfa74e-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