Color

#2b288a

#2b288a
hex#2b288a
rgbrgb(43, 40, 138)
hslhsl(242, 55%, 35%)
oklchoklch(0.352 0.157 276.1)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0387

Tints & shades

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

Harmonies

Complementary

Open in tool →

#878a28

#28568a · #5d288a

#8a2b28 · #288a2b

Split-complementary

Open in tool →

#8a5d28 · #568a28

#8a2856 · #878a28 · #288a5d

Contrast

#2b288a as textRatioAAAA largeAAAFix
Aaon white
11.84:1passpasspassPasses AAA — no fix needed.
Aaon black
1.77:1failfailfail
  • AA: use #6c69d3 as the text (4.6:1)
  • AAA: use #9390df as the text (7.3:1)
  • AA: or shift the background to #a1a1a1 (4.58:1)
  • AAA: or shift the background to #c7c7c7 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b288a 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

#2b288a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b288a
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 #2b288a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b288a-a29cc4-df9e4e-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