Color

#4033d7

#4033d7
hex#4033d7
rgbrgb(64, 51, 215)
hslhsl(245, 67%, 52%)
oklchoklch(0.461 0.235 275.5)
Closest name: Blurple (#5539cc)Relative luminance 0.0836

Colors that go with #4033d7

Charcoal, Sea Green and Amber 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 →

#c9d733

#3377d7 · #9233d7

#d74033 · #33d740

Split-complementary

Open in tool →

#d79233 · #77d733

#d73377 · #c9d733 · #33d792

Contrast

#4033d7 as textRatioAAAA largeAAAFix
Aaon white
7.86:1passpasspassPasses AAA — no fix needed.
Aaon black
2.67:1failfailfail
  • AA: use #7066e1 as the text (4.68:1)
  • AAA: use #948ce8 as the text (7.18:1)
  • AA: or shift the background to #c4c4c4 (4.5:1)
  • AAA: or shift the background to #f2f2f2 (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 #4033d7 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

#4033d7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4033d7
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 #4033d7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4033d7-a49cc4-dfa54e-261f2d-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