Color

#28009e

#28009e
hex#28009e
rgbrgb(40, 0, 158)
hslhsl(255, 100%, 31%)
oklchoklch(0.334 0.209 275.6)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0292

Tints & shades

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

Harmonies

Complementary

Open in tool →

#779e00

#00289e · #77009e

#9e2800 · #009e28

Split-complementary

Open in tool →

#9e7700 · #289e00

#9e0028 · #779e00 · #009e77

Contrast

#28009e as textRatioAAAA largeAAAFix
Aaon white
13.26:1passpasspassPasses AAA — no fix needed.
Aaon black
1.58:1failfailfail
  • AA: use #7d52ff as the text (4.52:1)
  • AAA: use #9f80ff as the text (7.01:1)
  • AA: or shift the background to #999999 (4.65:1)
  • AAA: or shift the background to #bdbdbd (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28009e 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

#28009e reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28009e
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 #28009e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28009e-ab9cc4-dfbd4e-291f2d-e9ebf1?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