Color

#2d288a

#2d288a
hex#2d288a
rgbrgb(45, 40, 138)
hslhsl(243, 55%, 35%)
oklchoklch(0.354 0.156 277.1)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0391

Tints & shades

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

Harmonies

Complementary

Open in tool →

#858a28

#28548a · #5e288a

#8a2d28 · #288a2d

Split-complementary

Open in tool →

#8a5e28 · #548a28

#8a2854 · #858a28 · #288a5e

Contrast

#2d288a as textRatioAAAA largeAAAFix
Aaon white
11.78:1passpasspassPasses AAA — no fix needed.
Aaon black
1.78:1failfailfail
  • AA: use #6e69d3 as the text (4.62:1)
  • AAA: use #9490df as the text (7.31:1)
  • AA: or shift the background to #a1a1a1 (4.56:1)
  • AAA: or shift the background to #c9c9c9 (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 #2d288a 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

#2d288a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d288a
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 #2d288a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d288a-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