# #5f99fc

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

## Values

- Hex: `#5f99fc`
- RGB: rgb(95, 153, 252)
- HSL: hsl(218, 96%, 68%)
- OKLCH: oklch(0.689 0.159 260.4)
- Relative luminance: 0.3224
- Nearest named color: cornflowerblue (#6495ed, Δ 2.261) — https://brandsweets.com/colors/cornflowerblue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/5f99fc

## Tints & shades

- Tints (toward white): #6ea2fc, #7dacfc, #8cb5fd, #9bbffd, #aac9fd, #b9d2fe, #c8dcfe, #d7e5fe, #e6effe, #f5f9ff
- Shades (toward black): #4185fb, #1e6ffa, #055df5, #0450d2, #0444b4, #033996, #022c73, #022055, #011332, #000814

## Harmonies

- Complementary: #fcc25f
- Analogous: #5fe7fc, #745ffc
- Triadic: #fc5f99, #99fc5f
- Split-complementary: #fc745f, #e7fc5f
- Tetradic: #fc5fe7, #fcc25f, #5ffc74

## Colors that go with #5f99fc

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 #5f99fc: softer than #000 and cool enough to feel like part of the same palette. Seen in: Blizzard (https://brandsweets.com/colors/brands/blizzard-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Lido (https://brandsweets.com/palettes/vivid#lido), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: analogous] — Deep Sky Blue is #5f99fc's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Figma (https://brandsweets.com/colors/brands/figma), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Remix (https://brandsweets.com/colors/brands/remix-run), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/deepskyblue
- **Tomato** #ff6347 [harmony, pool: triadic] — Tomato completes a triad with #5f99fc — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Replit (https://brandsweets.com/colors/brands/replit), Substack (https://brandsweets.com/colors/brands/substack-com), Abstract (https://brandsweets.com/colors/brands/abstract-com), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/tomato
- **Amber** #ffbf00 [pool] — Amber is paired with #5f99fc in 7 real palettes, including Blueprint and Ahrefs's brand system, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), NBA (https://brandsweets.com/colors/brands/nba-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 9 real palettes, including Unity's brand system and Qualcomm's brand system put Blue beside #5f99fc, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/blue
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #5f99fc in 4 real palettes, including Ahrefs's brand system and Learning App, as the lead colour. Seen in: Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/darkorange
- **Denim** #1560bd [pool] — Designers have shipped Denim with #5f99fc: 6 real palettes, including Apple's brand system and Coca-Cola's brand system, as the accent. Seen in: Apple (https://brandsweets.com/colors/brands/apple-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Coursera (https://brandsweets.com/colors/brands/coursera-org). — https://brandsweets.com/colors/denim
- **Gold** #ffd700 [pool] — Gold shows up next to #5f99fc in 4 real palettes, including Miro's brand system and Star Wars's brand system, as the lead colour. Seen in: Miro (https://brandsweets.com/colors/brands/miro-com), Star Wars (https://brandsweets.com/colors/brands/starwars-com), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Phantom: The money app that'll take you placesLogo PhantomLogo PhantomLogo Phantom (https://brandsweets.com/colors/brands/phantom-com). — https://brandsweets.com/colors/gold

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

- On white (#ffffff): 2.82:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #196cfa (4.6:1); AA: background → #303030 (4.68:1); AAA: text → #044ecd (7.06:1); AAA: background → #0a0a0a (7.02:1)
- On black (#000000): 7.45:1 — AA pass, AA-large pass, AAA pass

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- 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/5f99fc-9ca6c4-df644e-201f2d-e9f0f1?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: "#5f99fc" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.