Color

#2f31ac

#2f31ac
hex#2f31ac
rgbrgb(47, 49, 172)
hslhsl(239, 57%, 43%)
oklchoklch(0.404 0.19 273.2)
Closest name: Depths of Night (#2c319b)Relative luminance 0.0578

Tints & shades

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

Harmonies

Complementary

Open in tool →

#acaa2f

#2f70ac · #6c2fac

#ac2f31 · #31ac2f

Split-complementary

Open in tool →

#ac6c2f · #70ac2f

#ac2f70 · #acaa2f · #2fac6c

Contrast

#2f31ac as textRatioAAAA largeAAAFix
Aaon white
9.74:1passpasspassPasses AAA — no fix needed.
Aaon black
2.16:1failfailfail
  • AA: use #6769d5 as the text (4.56:1)
  • AAA: use #8f90e0 as the text (7.23:1)
  • AA: or shift the background to #b3b3b3 (4.65:1)
  • AAA: or shift the background to #dbdbdb (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f31ac 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

#2f31ac reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f31ac
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 #2f31ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f31ac-a09cc4-df964e-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