Tabloid
Open in tool →Red, black and yellow on white is the loudest three-color system in print — use it when headlines are the product.
Color
#efcf34
#efcf34
hex
#efcf34rgb
rgb(239, 207, 52)hsl
hsl(50, 85%, 57%)oklch
oklch(0.857 0.163 96.6)Closest name: Aurora (#ebd147)Relative luminance 0.6322
Colors that go with #efcf34
Charcoal, Cornflower Blue and Deep Sky Blue 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.
Cornflower Blue #6495ed
complementaryshippedCornflower Blue sits directly opposite #efcf34 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Deep Sky Blue #00bfff
split-complementshippedDeep Sky Blue is a split-complement of #efcf34: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #efcf34 in 5 real palettes, including Tabloid and Diner, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #efcf34: 8 real palettes, including Walmart's brand system and Warner Bros.'s brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #efcf34: 4 real palettes, including Miro's brand system and Heatwave, as the accent.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #efcf34: 4 real palettes, including Nursery and Steam's brand system, as the supporting colour.
Red #ff0000
shippedRed is paired with #efcf34 in 4 real palettes, including Paddle's brand system and Phantom: The money app that'll take you placesLogo PhantomLogo PhantomLogo Phantom's brand system, as the supporting colour.
Real palettes that use #efcf34
Tints & shades
Harmonies
Contrast
| #efcf34 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.54:1 | fail | fail | fail | |
Aaon black | 13.64:1 | pass | pass | pass | Passes 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 #efcf34 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Garnet
Open in tool →Garnet, carnelian and citrine on a wine-black — the warm jewel set for spirits, theatre and jewellery itself.
Fonts for this mood
#efcf34 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #efcf34
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #efcf34 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/efcf34-c4c29c-4eacdf-292d1f-f1ece9?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md