Color

#2b308c

#2b308c
hex#2b308c
rgbrgb(43, 48, 140)
hslhsl(237, 53%, 36%)
oklchoklch(0.368 0.15 274)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0452

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8c882b

#2b618c · #572b8c

#8c2b30 · #308c2b

Split-complementary

Open in tool →

#8c572b · #618c2b

#8c2b61 · #8c882b · #2b8c57

Contrast

#2b308c as textRatioAAAA largeAAAFix
Aaon white
11.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.9:1failfailfail
  • AA: use #676cd0 as the text (4.63:1)
  • AAA: use #8e92dc as the text (7.3:1)
  • AA: or shift the background to #a6a6a6 (4.53:1)
  • AAA: or shift the background to #cfcfcf (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b308c 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

#2b308c reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b308c
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 #2b308c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b308c-9f9cc4-df924e-251f2d-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