Color
#151bcb
#151bcbrgb(21, 27, 203)hsl(238, 81%, 44%)oklch(0.401 0.25 266.6)Colors that go with #151bcb
Charcoal, Cornflower Blue and Crimson 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 #151bcb: softer than #000 and cool enough to feel like part of the same palette.
Cornflower Blue #6495ed
shippedCornflower Blue is paired with #151bcb in 5 real palettes, including Spotify's brand system and Qualcomm's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
triadicshippedCrimson completes a triad with #151bcb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Denim #1560bd
shippedDenim is paired with #151bcb in 4 real palettes, including Google's brand system and Intel's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #151bcb in 5 real palettes, including Cargo's brand system and Readymag's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #151bcb in 4 real palettes, including Spotify's brand system and Unity's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #151bcb in 8 real palettes, including Monzo's brand system and Sketch's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #151bcb in 6 real palettes, including Intercom's brand system and Monzo's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #151bcb
Tints & shades
Harmonies
Contrast
| #151bcb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 10.24:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.05:1 | 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 #151bcb 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
#151bcb 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 #151bcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/151bcb-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