Color

#0d83ba

#0d83ba
hex#0d83ba
rgbrgb(13, 131, 186)
hslhsl(199, 87%, 39%)
oklchoklch(0.579 0.124 237.5)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1986

Colors that go with #0d83ba

Charcoal, Crimson and Royal Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ba440d

#0dba9a · #0d2dba

#ba0d83 · #83ba0d

Split-complementary

Open in tool →

#ba0d2d · #ba9a0d

#9a0dba · #ba440d · #2dba0d

Contrast

#0d83ba as textRatioAAAA largeAAAFix
Aaon white
4.22:1failpassfail
  • AA: use #0c7cb0 as the text (4.64:1)
  • AAA: use #095e86 as the text (7.1:1)
  • AA: or shift the background to #0f0f0f (4.54:1)
Aaon black
4.97:1passpassfail
  • AAA: use #10a1e5 as the text (7.25:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d83ba as the background.

Brands using this color

Fonts for this mood

#0d83ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d83ba
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0d83ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d83ba-9cb3c4-df4e66-1f232d-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