Color

#315faf

#315faf
hex#315faf
rgbrgb(49, 95, 175)
hslhsl(218, 56%, 44%)
oklchoklch(0.496 0.137 260.6)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1193

Colors that go with #315faf

Charcoal, Sea Green and Sienna 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 →

#af8131

#319eaf · #4231af

#af315f · #5faf31

Split-complementary

Open in tool →

#af4231 · #9eaf31

#af319e · #af8131 · #31af42

Contrast

#315faf as textRatioAAAA largeAAAFix
Aaon white
6.2:1passpassfail
  • AAA: use #2d579f as the text (7.06:1)
Aaon black
3.39:1failpassfail
  • AA: use #4475ca as the text (4.64:1)
  • AAA: use #7498d8 as the text (7.23:1)
  • AA: or shift the background to #dedede (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #315faf 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

#315faf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #315faf
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 #315faf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/315faf-9ca6c4-df644e-201f2d-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