Color

#281eeb

#281eeb
hex#281eeb
rgbrgb(40, 30, 235)
hslhsl(243, 84%, 52%)
oklchoklch(0.45 0.278 269)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0738

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e1eb1e

#1e7aeb · #8f1eeb

#eb281e · #1eeb28

Split-complementary

Open in tool →

#eb8f1e · #7aeb1e

#eb1e7a · #e1eb1e · #1eeb8f

Contrast

#281eeb as textRatioAAAA largeAAAFix
Aaon white
8.48:1passpasspassPasses AAA — no fix needed.
Aaon black
2.48:1failfailfail
  • AA: use #6b64f2 as the text (4.73:1)
  • AAA: use #8f8af5 as the text (7.12:1)
  • AA: or shift the background to #bdbdbd (4.52:1)
  • AAA: or shift the background to #ebebeb (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281eeb 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

#281eeb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281eeb
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 #281eeb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281eeb-a39cc4-dfa04e-261f2d-e9edf1?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