Color

#5999de

#5999de
hex#5999de
rgbrgb(89, 153, 222)
hslhsl(211, 67%, 61%)
oklchoklch(0.67 0.123 251.7)
Closest name: Blue Bay (#619ad6)Relative luminance 0.3018

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de9e59

#59dcde · #5b59de

#de5999 · #99de59

Split-complementary

Open in tool →

#de5b59 · #dcde59

#de59dc · #de9e59 · #59de5b

Contrast

#5999de as textRatioAAAA largeAAAFix
Aaon white
2.98:1failfailfail
  • AA: use #2878cc as the text (4.52:1)
  • AAA: use #1e5a99 as the text (7.05:1)
  • AA: or shift the background to #2e2e2e (4.55:1)
  • AAA: or shift the background to #000000 (7.04:1)
Aaon black
7.04:1passpasspassPasses 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 #5999de 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

#5999de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5999de
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 #5999de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5999de-9cabc4-df534e-1f202d-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