#ef570b as text	Ratio	AA	AA large	AAA	Fix
Aaon white	3.48:1	fail	pass	fail	AA: use #cd4b0a as the text (4.56:1) AAA: use #973707 as the text (7.33:1) AA: or shift the background to #212121 (4.63:1)
Aaon black	6.04:1	pass	pass	fail	AAA: use #f56d29 as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ef570b 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

f25f29 b03a2e f2c14e 14100e f8ede3

Ember

Open in tool →

Flame orange on charcoal — the sports and energy palette; one accent yellow for stats and highlights.

Bold Dark Warm

Fonts for this mood

#ef570b 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 #ef570b

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 #ef570b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ef570b-c4ae9c-62cbbb-2d2a1f-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