Gemstone
Open in tool →Emerald, amethyst and ruby on velvet-black — the jewel-tone trio; the surface must be dark or the stones go plastic.
Color
#7f18cd
#7f18cd
hex
#7f18cdrgb
rgb(127, 24, 205)hsl
hsl(274, 79%, 45%)oklch
oklch(0.49 0.243 303.1)Closest name: Lilac Spring (#8822cc)Relative luminance 0.0957
Colors that go with #7f18cd
Olive Green, Teal and Sea Green 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.
Olive Green #808000
complementaryOlive Green sits directly opposite #7f18cd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Teal #008080
triadicshippedTeal completes a triad with #7f18cd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sea Green #2e8b57
split-complementSea Green is a split-complement of #7f18cd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal #36454f
neutralCharcoal is the text near-black for #7f18cd: softer than #000 and cool enough to feel like part of the same palette.
Sienna #a0522d
triadicSienna completes a triad with #7f18cd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Crimson #dc143c
shippedCrimson is paired with #7f18cd in Gemstone, as the accent — a combination designers have actually shipped, not a computed rotation.
Dark Cyan #008b8b
shippedDark Cyan is paired with #7f18cd in Peacock, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #7f18cd in Peacock, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #7f18cd
Tints & shades
Harmonies
Contrast
| #7f18cd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.21:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.91:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #7f18cd 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
Fonts for this mood
#7f18cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #7f18cd
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 #7f18cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/7f18cd-b79cc4-c2cb62-2d1f2d-eae9f1?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