Color
#c4e51f
#c4e51frgb(196, 229, 31)hsl(70, 79%, 51%)oklch(0.868 0.2 119.9)Colors that go with #c4e51f
Charcoal, Cornflower Blue and Crimson 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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #c4e51f: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Cornflower Blue #6495ed
split-complementshippedCornflower Blue is a split-complement of #c4e51f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #c4e51f in 5 real palettes, including Wise's brand system and Lay's's brand system, as the accent.
Deep Sky Blue #00bfff
triadicshippedDeep Sky Blue completes a triad with #c4e51f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Denim #1560bd
shippedDesigners have shipped Denim with #c4e51f: 5 real palettes, including Ikea's brand system and FIFA's brand system, as the accent.
Red #ff0000
shippedRed is paired with #c4e51f in 4 real palettes, including Wise's brand system and Paddle's brand system, as the lead colour.
Tomato #ff6347
shipped4 real palettes, including Night Market and Crayon Box put Tomato beside #c4e51f, as the lead colour.
Plum #dda0dd
complementaryPlum sits directly opposite #c4e51f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #c4e51f
Tints & shades
Harmonies
Contrast
| #c4e51f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.44:1 | fail | fail | fail | |
Aaon black | 14.57:1 | 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 #c4e51f as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #c4e51f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/c4e51f-b6bea2-4e7cdf-252d1f-f1efe9?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