Color

#5b98fb

#5b98fb
hex#5b98fb
rgbrgb(91, 152, 251)
hslhsl(217, 95%, 67%)
oklchoklch(0.685 0.16 259.6)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.3165

Colors that go with #5b98fb

Charcoal, Tomato and Amber 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.

Real palettes that use #5b98fb

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbbe5b

#5be8fb · #6e5bfb

#fb5b98 · #98fb5b

Split-complementary

Open in tool →

#fb6e5b · #e8fb5b

#fb5be8 · #fbbe5b · #5bfb6e

Contrast

#5b98fb as textRatioAAAA largeAAAFix
Aaon white
2.87:1failfailfail
  • AA: use #156df9 as the text (4.58:1)
  • AAA: use #054fc7 as the text (7.12:1)
  • AA: or shift the background to #303030 (4.61:1)
  • AAA: or shift the background to #050505 (7.11:1)
Aaon black
7.33:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b98fb 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

#5b98fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5b98fb
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 #5b98fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b98fb-9ca7c4-df624e-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