Color

#040be7

#040be7
hex#040be7
rgbrgb(4, 11, 231)
hslhsl(238, 97%, 46%)
oklchoklch(0.424 0.287 264.4)
Closest name: Burning Ultrablue (#150aec)Relative luminance 0.0603

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e7df04

#047de7 · #6e04e7

#e7040b · #0be704

Split-complementary

Open in tool →

#e76e04 · #7de704

#e7047d · #e7df04 · #04e76e

Contrast

#040be7 as textRatioAAAA largeAAAFix
Aaon white
9.52:1passpasspassPasses AAA — no fix needed.
Aaon black
2.21:1failfailfail
  • AA: use #5e64fd as the text (4.72:1)
  • AAA: use #868afd as the text (7.07:1)
  • AA: or shift the background to #b3b3b3 (4.54:1)
  • AAA: or shift the background to #dedede (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040be7 as the background.

Brands using this color

Fonts for this mood

#040be7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040be7
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 #040be7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040be7-9f9cc4-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