Color

#1287ba

#1287ba
hex#1287ba
rgbrgb(18, 135, 186)
hslhsl(198, 82%, 40%)
oklchoklch(0.589 0.121 235)
Closest name: steelblue (#4682b4)Relative luminance 0.21

Colors that go with #1287ba

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 →

#ba4512

#12ba98 · #1234ba

#ba1287 · #87ba12

Split-complementary

Open in tool →

#ba1234 · #ba9812

#9812ba · #ba4512 · #34ba12

Contrast

#1287ba as textRatioAAAA largeAAAFix
Aaon white
4.04:1failpassfail
  • AA: use #117dac as the text (4.61:1)
  • AAA: use #0d5f82 as the text (7.06:1)
  • AA: or shift the background to #141414 (4.56:1)
Aaon black
5.2:1passpassfail
  • AAA: use #169fda as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1287ba as the background.

Brands using this color

Fonts for this mood

#1287ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1287ba
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 #1287ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1287ba-9cb3c4-df4e69-1f232d-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