#ef501f as text	Ratio	AA	AA large	AAA	Fix
Aaon white	3.6:1	fail	pass	fail	AA: use #d73e0f as the text (4.58:1) AAA: use #a22e0b as the text (7.16:1) AA: or shift the background to #1f1f1f (4.58:1)
Aaon black	5.84:1	pass	pass	fail	AAA: use #f26d45 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ef501f as the background.

Brands using this color

Palettes built around it

ea580c 1c1917 0891b2 ffffff

Launch Orange

Open in tool →

Orange is the rarest SaaS primary, which is exactly why it stands out on a pricing page; cyan keeps it from feeling like a hardware store.

Bold Warm Vivid ModernSaas

Fonts for this mood

#ef501f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

Warm fonts →Playful fonts →Bold fonts →

mcpConnect your agent — build around #ef501f

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 #ef501f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ef501f-c4aa9c-62cbb1-2d291f-f1e9eb?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