Color
#e4c021
#e4c021rgb(228, 192, 33)hsl(49, 78%, 51%)oklch(0.816 0.161 94.6)Colors that go with #e4c021
Charcoal, Deep Sky Blue and Cornflower 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.
Deep Sky Blue #00bfff
split-complementshippedDeep Sky Blue is a split-complement of #e4c021: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cornflower Blue #6495ed
complementaryshippedCornflower Blue sits directly opposite #e4c021 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Champagne #f7e7ce
shippedChampagne is paired with #e4c021 in 4 real palettes, including Midnight Luxe and Coffee Bar, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #e4c021 in 5 real palettes, including Tabloid and Diner, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
shippedDark Olive Green is paired with #e4c021 in 4 real palettes, including Farmers Market and Miro's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #e4c021 in 5 real palettes, including Wikipedia's brand system and Warner Bros.'s brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Rust #b7410e
shippedRust is paired with #e4c021 in 4 real palettes, including Trailhead and Garnet, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #e4c021
Tints & shades
Harmonies
Contrast
| #e4c021 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.77:1 | fail | fail | fail | |
Aaon black | 11.86:1 | 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 #e4c021 as the background.
Brands using this color
Fonts for this mood
#e4c021 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #e4c021 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/e4c021-c4c19c-4eaedf-2a2d1f-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