Color
#383bbc
#383bbcrgb(56, 59, 188)hsl(239, 54%, 48%)oklch(0.441 0.197 273.8)Colors that go with #383bbc
Medium Sea Green, Midnight Blue and Slate Gray 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.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #383bbc in 4 real palettes, including Indigo SaaS and Fintech Trust, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #383bbc in 5 real palettes, including Blue Mono and Fintech Trust, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #383bbc in 4 real palettes, including Ink & Paper and Campus, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Olive Green #808000
complementaryOlive Green sits directly opposite #383bbc 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 #383bbc: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
shippedRoyal Blue is paired with #383bbc in 3 real palettes, including Behance's brand system and Dropbox's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Steel Blue #4682b4
analogousshippedSteel Blue is #383bbc's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sienna #a0522d
split-complementSienna is a split-complement of #383bbc: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #383bbc
Tints & shades
Harmonies
Contrast
| #383bbc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.33:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.52:1 | 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 #383bbc as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#383bbc reads as cool, modern. 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 #383bbc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/383bbc-a09cc4-df964e-251f2d-e9edf1?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