Color

#318dd8

#318dd8
hex#318dd8
rgbrgb(49, 141, 216)
hslhsl(207, 68%, 52%)
oklchoklch(0.625 0.142 247.5)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2466

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d87c31

#31d8d0 · #313ad8

#d8318d · #8dd831

Split-complementary

Open in tool →

#d8313a · #d8d031

#d031d8 · #d87c31 · #3ad831

Contrast

#318dd8 as textRatioAAAA largeAAAFix
Aaon white
3.54:1failpassfail
  • AA: use #2478bc as the text (4.68:1)
  • AAA: use #1b5a8d as the text (7.26:1)
  • AA: or shift the background to #212121 (4.55:1)
Aaon black
5.93:1passpassfail
  • AAA: use #4b9bdd as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #318dd8 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

#318dd8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #318dd8
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 #318dd8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/318dd8-9cadc4-df4e53-1f212d-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