Color

#40357e

#40357e
hex#40357e
rgbrgb(64, 53, 126)
hslhsl(249, 41%, 35%)
oklchoklch(0.382 0.119 286.2)
Closest name: Galactic Compass (#48357b)Relative luminance 0.0514

Colors that go with #40357e

Charcoal, Steel Blue and 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 →

#737e35

#354e7e · #64357e

#7e4035 · #357e40

Split-complementary

Open in tool →

#7e6435 · #4e7e35

#7e354e · #737e35 · #357e64

Contrast

#40357e as textRatioAAAA largeAAAFix
Aaon white
10.35:1passpasspassPasses AAA — no fix needed.
Aaon black
2.03:1failfailfail
  • AA: use #786cc1 as the text (4.71:1)
  • AAA: use #9990d0 as the text (7.25:1)
  • AA: or shift the background to #ababab (4.51:1)
  • AAA: or shift the background to #d6d6d6 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40357e 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

#40357e reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40357e
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 #40357e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40357e-a79cc4-dfae4e-271f2d-e9ecf1?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