Color

#99ace5

#99ace5
hex#99ace5
rgbrgb(153, 172, 229)
hslhsl(225, 59%, 75%)
oklchoklch(0.751 0.085 270)
Closest name: Birdie Num Num (#89acda)Relative luminance 0.4193

Colors that go with #99ace5

Charcoal, Dark Khaki 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e5d29a

#9ad2e5 · #ac9ae5

#e59aac · #ace59a

Split-complementary

Open in tool →

#e5ac9a · #d2e59a

#e59ad2 · #e5d29a · #9ae5ac

Contrast

#99ace5 as textRatioAAAA largeAAAFix
Aaon white
2.24:1failfailfail
  • AA: use #5171d2 as the text (4.52:1)
  • AAA: use #2f51b6 as the text (7.06:1)
  • AA: or shift the background to #404040 (4.63:1)
  • AAA: or shift the background to #212121 (7.2:1)
Aaon black
9.39:1passpasspassPasses 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 #99ace5 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

#99ace5 reads as cool, light, clean. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #99ace5
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 #99ace5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/99ace5-9ca1c4-df754e-221f2d-e9eff1?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