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
#8120cb
#8120cb
hex
#8120cbrgb
rgb(129, 32, 203)hsl
hsl(274, 73%, 46%)oklch
oklch(0.495 0.236 303.9)Closest name: Lilac Spring (#8822cc)Relative luminance 0.1001
Colors that go with #8120cb
Denim, Olive Green and Charcoal 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.
Denim #1560bd
shippedDesigners have shipped Denim with #8120cb: 4 real palettes, including Linkedin's brand system and Peacock, as the lead colour.
Olive Green #808000
complementaryOlive Green sits directly opposite #8120cb on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #8120cb: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
analogousshippedRoyal Blue is #8120cb's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Taupe #483c32
shippedTaupe is paired with #8120cb in 3 real palettes, including Datadog's brand system and Superhuman's brand system, as that palette's text colour.
Teal #008080
triadicshippedTeal completes a triad with #8120cb — 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 #8120cb: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #8120cb in two real palettes: Gemstone and Wells Fargo's brand system, as the accent.
Real palettes that use #8120cb
Tints & shades
Harmonies
Contrast
| #8120cb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.99:1 | pass | pass | fail |
|
Aaon black | 3:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #8120cb 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
#8120cb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #8120cb
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 #8120cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/8120cb-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