Color
#383ca3
#383ca3rgb(56, 60, 163)hsl(238, 49%, 43%)oklch(0.419 0.163 275.2)Colors that go with #383ca3
Charcoal, Sea Green and Steel 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #383ca3: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #383ca3 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Steel Blue #4682b4
analogousshippedSteel Blue is #383ca3's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped7 real palettes, including Procter & Gamble's brand system and CVS's brand system put Blue beside #383ca3, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #383ca3: 5 real palettes, including Blue Mono and Gopro's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #383ca3 in 8 real palettes, including Behance's brand system and Chase's brand system, as the accent.
Midnight Blue #191970
shipped11 real palettes, including Blue Mono and Fintech Trust put Midnight Blue beside #383ca3, as that palette's text colour.
Orange Red #ff4500
shippedOrange Red is paired with #383ca3 in 4 real palettes, including Tide's brand system and Soundcloud's brand system, as the accent.
Real palettes that use #383ca3
Tints & shades
Harmonies
Contrast
| #383ca3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.96:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.34:1 | 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 #383ca3 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
#383ca3 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 #383ca3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/383ca3-9f9cc4-df944e-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