# #5d91bb

A color — cool, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#5d91bb`
- RGB: rgb(93, 145, 187)
- HSL: hsl(207, 41%, 55%)
- OKLCH: oklch(0.637 0.084 244)
- Relative luminance: 0.2617
- Nearest named color: Canadian Tuxedo (#579aca, Δ 2.887) — https://brandsweets.com/colors/canadian-tuxedo
- Moods: cool, modern
- Page: https://brandsweets.com/colors/5d91bb

## Tints & shades

- Tints (toward white): #6c9bc1, #7ea7c9, #8cb1cf, #9abbd5, #acc7dc, #bbd1e2, #c9dae8, #d7e4ee, #e9f0f6, #f8fafc
- Shades (toward black): #4b85b4, #4477a2, #3c6a90, #355d7e, #2d506c, #244056, #1d3244, #152532, #0e1820, #060b0e

## Harmonies

- Complementary: #bb885d
- Analogous: #5dbbb7, #5d62bb
- Triadic: #bb5d91, #91bb5d
- Split-complementary: #bb5d62, #bbb75d
- Tetradic: #b75dbb, #bb885d, #62bb5d

## Colors that go with #5d91bb

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #5d91bb: softer than #000 and cool enough to feel like part of the same palette. Seen in: Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Plaid (https://brandsweets.com/colors/brands/plaid-com), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #5d91bb on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Notion (https://brandsweets.com/colors/brands/notion), Atelier (https://brandsweets.com/palettes/elegant#atelier), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #5d91bb in 9 real palettes, including Beach Hut and Wired's brand system, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Wired (https://brandsweets.com/colors/brands/wired-com), Google (https://brandsweets.com/colors/brands/google-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/amber
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #5d91bb: 6 real palettes, including Hershey's's brand system and Blue Mono, as the supporting colour. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Glacier (https://brandsweets.com/palettes/cool#glacier), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #5d91bb in 7 real palettes, including Retro Pop and Diner, as the lead colour. Seen in: Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Diner (https://brandsweets.com/palettes/vivid#diner), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Redfin (https://brandsweets.com/colors/brands/redfin-com). — https://brandsweets.com/colors/crimson
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #5d91bb in 4 real palettes, including Elastic's brand system and Learning App, as the lead colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/darkorange
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #5d91bb: 8 real palettes, including Telegram's brand system and Snowflake AI Data Cloud's brand system, as the lead colour. Seen in: Telegram (https://brandsweets.com/colors/brands/telegram-org), Snowflake AI Data Cloud (https://brandsweets.com/colors/brands/snowflake-com), Astro (https://brandsweets.com/colors/brands/astro-build), Patreon (https://brandsweets.com/colors/brands/patreon-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #5d91bb: 18 real palettes, including Gopro's brand system and Dusk, as the lead colour. Seen in: Gopro (https://brandsweets.com/colors/brands/gopro-com), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com). — https://brandsweets.com/colors/denim

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 3.37:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #457aa5 (4.58:1); AA: background → #242424 (4.61:1); AAA: text → #335a7a (7.28:1)
- On black (#000000): 6.23:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #6c9bc1 (7.1:1)

## Fonts for this mood

- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/5d91bb-9cadc4-df4e53-1f212d-e9f1f1?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#5d91bb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.