Color

#1a71db

#1a71db
hex#1a71db
rgbrgb(26, 113, 219)
hslhsl(213, 79%, 48%)
oklchoklch(0.56 0.18 256.7)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1714

Colors that go with #1a71db

Charcoal, Crimson and Copper 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 →

#db841a

#1ad1db · #231adb

#db1a71 · #71db1a

Split-complementary

Open in tool →

#db231a · #d1db1a

#db1ad1 · #db841a · #1adb23

Contrast

#1a71db as textRatioAAAA largeAAAFix
Aaon white
4.74:1passpassfail
  • AAA: use #1457a9 as the text (7.08:1)
Aaon black
4.43:1failpassfail
  • AA: use #1a73e0 as the text (4.57:1)
  • AAA: use #5699eb as the text (7.15:1)
  • AA: or shift the background to #fafafa (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1a71db as the background.

Brands using this color

Fonts for this mood

#1a71db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1a71db
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 #1a71db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1a71db-9ca9c4-df584e-1f202d-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