Color

#2d31fb

#2d31fb
hex#2d31fb
rgbrgb(45, 49, 251)
hslhsl(239, 96%, 58%)
oklchoklch(0.488 0.282 268.9)
Closest name: C64 Blue (#003aff)Relative luminance 0.0972

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbf72d

#2d97fb · #902dfb

#fb2d31 · #31fb2d

Split-complementary

Open in tool →

#fb902d · #97fb2d

#fb2d97 · #fbf72d · #2dfb90

Contrast

#2d31fb as textRatioAAAA largeAAAFix
Aaon white
7.13:1passpasspassPasses AAA — no fix needed.
Aaon black
2.94:1failfailfail
  • AA: use #5f62fc as the text (4.64:1)
  • AAA: use #8789fd as the text (7.03:1)
  • AA: or shift the background to #cfcfcf (4.58:1)
  • AAA: or shift the background to #ffffff (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2d31fb 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

#2d31fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d31fb
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 #2d31fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d31fb-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