Color
#131bb4
#131bb4rgb(19, 27, 180)hsl(237, 81%, 39%)oklch(0.371 0.225 266.8)Colors that go with #131bb4
Charcoal, Blue and Cornflower 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 #131bb4: softer than #000 and cool enough to feel like part of the same palette.
Blue #0000ff
shipped4 real palettes, including Pfizer's brand system and Pepsi's brand system put Blue beside #131bb4, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #131bb4: 4 real palettes, including Blue Mono and Peacock's brand system, as the supporting colour.
Crimson #dc143c
triadicshippedCrimson completes a triad with #131bb4 — 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 #131bb4: 4 real palettes, including Google's brand system and Intel's brand system, as the accent.
Midnight Blue #191970
shipped9 real palettes, including Blue Mono and Fintech Trust put Midnight Blue beside #131bb4, as that palette's text colour.
Orange Red #ff4500
shippedOrange Red is paired with #131bb4 in 5 real palettes, including Tide's brand system and Intercom's brand system, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #131bb4 in 9 real palettes, including Nivea's brand system and NHL's brand system, as the supporting colour.
Real palettes that use #131bb4
Tints & shades
Harmonies
Contrast
| #131bb4 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 11.39:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.84:1 | 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 #131bb4 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
#131bb4 reads as cool, vivid, technical. 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 #131bb4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/131bb4-9f9cc4-df924e-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