Color

#137cd8

#137cd8
hex#137cd8
rgbrgb(19, 124, 216)
hslhsl(208, 84%, 46%)
oklchoklch(0.581 0.165 251.7)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1951

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d86f13

#13d8d1 · #1319d8

#d8137c · #7cd813

Split-complementary

Open in tool →

#d81319 · #d8d113

#d113d8 · #d86f13 · #19d813

Contrast

#137cd8 as textRatioAAAA largeAAAFix
Aaon white
4.28:1failpassfail
  • AA: use #1276ce as the text (4.66:1)
  • AAA: use #0d599b as the text (7.19:1)
  • AA: or shift the background to #0d0d0d (4.54:1)
Aaon black
4.9:1passpassfail
  • AAA: use #3a9aee as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #137cd8 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

#137cd8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #137cd8
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 #137cd8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/137cd8-9cadc4-df4e51-1f212d-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