Color

#437ecb

#437ecb
hex#437ecb
rgbrgb(67, 126, 203)
hslhsl(214, 57%, 53%)
oklchoklch(0.59 0.134 255.9)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.2043

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cb9043

#43c2cb · #4c43cb

#cb437e · #7ecb43

Split-complementary

Open in tool →

#cb4c43 · #c2cb43

#cb43c2 · #cb9043 · #43cb4c

Contrast

#437ecb as textRatioAAAA largeAAAFix
Aaon white
4.13:1failpassfail
  • AA: use #3776c8 as the text (4.58:1)
  • AAA: use #295794 as the text (7.28:1)
  • AA: or shift the background to #121212 (4.54:1)
Aaon black
5.09:1passpassfail
  • AAA: use #6b99d6 as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #437ecb 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

#437ecb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #437ecb
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 #437ecb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/437ecb-9ca9c4-df5a4e-1f1f2d-e9f0f1?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