Color
#215d91
#215d91rgb(33, 93, 145)hsl(208, 63%, 35%)oklch(0.466 0.104 248.4)Colors that go with #215d91
Charcoal, Crimson and Amber 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 #215d91: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #215d91 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber #ffbf00
shippedAmber is paired with #215d91 in 5 real palettes, including Lemon Squeezy's brand system and Warner Bros.'s brand system, as the lead colour.
Blue #0000ff
shipped4 real palettes, including CVS's brand system and Pixar's brand system put Blue beside #215d91, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #215d91: 4 real palettes, including Coca-Cola's brand system and Gopro's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #215d91: 5 real palettes, including AT&T's brand system and Wendy's's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #215d91 in 4 real palettes, including Open House and Sapphire & Gold, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #215d91 in 4 real palettes, including Fintech Trust and Console Light, as the accent.
Real palettes that use #215d91
Tints & shades
Harmonies
Contrast
| #215d91 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.91:1 | pass | pass | fail |
|
Aaon black | 3.04:1 | 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 #215d91 as the background.
Brands using this color
Fonts for this mood
#215d91 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 #215d91 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/215d91-9cadc4-df4e51-1f212d-e9f1f1?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