Color

#290bea

#290bea
hex#290bea
rgbrgb(41, 11, 234)
hslhsl(248, 91%, 48%)
oklchoklch(0.438 0.283 269.5)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0665

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ccea0b

#0b5dea · #980bea

#ea290b · #0bea29

Split-complementary

Open in tool →

#ea980b · #5dea0b

#ea0b5d · #ccea0b · #0bea98

Contrast

#290bea as textRatioAAAA largeAAAFix
Aaon white
9.01:1passpasspassPasses AAA — no fix needed.
Aaon black
2.33:1failfailfail
  • AA: use #735ef7 as the text (4.67:1)
  • AAA: use #9585f9 as the text (7:1)
  • AA: or shift the background to #b8b8b8 (4.54:1)
  • AAA: or shift the background to #e3e3e3 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #290bea 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

#290bea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #290bea
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 #290bea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/290bea-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