Color

#137eb4

#137eb4
hex#137eb4
rgbrgb(19, 126, 180)
hslhsl(200, 81%, 39%)
oklchoklch(0.564 0.121 238.5)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1836

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b44913

#13b499 · #132eb4

#b4137e · #7eb413

Split-complementary

Open in tool →

#b4132e · #b49913

#9913b4 · #b44913 · #2eb413

Contrast

#137eb4 as textRatioAAAA largeAAAFix
Aaon white
4.5:1failpassfail
  • AA: use #127baf as the text (4.69:1)
  • AAA: use #0e5e86 as the text (7.09:1)
  • AA: or shift the background to #050505 (4.53:1)
Aaon black
4.67:1passpassfail
  • AAA: use #189fe2 as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #137eb4 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

#137eb4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #137eb4
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 #137eb4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/137eb4-9cb2c4-df4e64-1f232d-e9f1f0?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