Color

#2d31ae

#2d31ae
hex#2d31ae
rgbrgb(45, 49, 174)
hslhsl(238, 59%, 43%)
oklchoklch(0.404 0.193 272.4)
Closest name: Depths of Night (#2c319b)Relative luminance 0.0581

Colors that go with #2d31ae

Charcoal, Sea Green and Steel Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#aeaa2d

#2d72ae · #692dae

#ae2d31 · #31ae2d

Split-complementary

Open in tool →

#ae692d · #72ae2d

#ae2d72 · #aeaa2d · #2dae69

Contrast

#2d31ae as textRatioAAAA largeAAAFix
Aaon white
9.71:1passpasspassPasses AAA — no fix needed.
Aaon black
2.16:1failfailfail
  • AA: use #6569d7 as the text (4.56:1)
  • AAA: use #8d90e2 as the text (7.22:1)
  • AA: or shift the background to #b3b3b3 (4.63:1)
  • AAA: or shift the background to #dbdbdb (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2d31ae 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

#2d31ae reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d31ae
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #2d31ae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d31ae-9f9cc4-df944e-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