Color

#2378cd

#2378cd
hex#2378cd
rgbrgb(35, 120, 205)
hslhsl(210, 71%, 47%)
oklchoklch(0.568 0.153 252.6)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.182

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cd7823

#23cdcd · #2323cd

#cd2378 · #78cd23

Split-complementary

Open in tool →

#cd2323 · #cdcd23

#cd23cd · #cd7823 · #23cd23

Contrast

#2378cd as textRatioAAAA largeAAAFix
Aaon white
4.53:1passpassfail
  • AAA: use #1a5999 as the text (7.16:1)
Aaon black
4.64:1passpassfail
  • AAA: use #559ce2 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2378cd as the background.

Brands using this color

Fonts for this mood

#2378cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2378cd
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 #2378cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2378cd-9cabc4-df514e-1f202d-e9f1f1?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