# #3f8efd

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

## Values

- Hex: `#3f8efd`
- RGB: rgb(63, 142, 253)
- HSL: hsl(215, 98%, 62%)
- OKLCH: oklch(0.654 0.182 257.6)
- Relative luminance: 0.2749
- Nearest named color: dodgerblue (#1e90ff, Δ 1.641) — https://brandsweets.com/colors/dodgerblue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/3f8efd

## Tints & shades

- Tints (toward white): #539afd, #62a3fd, #77affe, #86b8fe, #9ac4fe, #aed0fe, #bdd8fe, #d2e4ff, #e1edff, #f5f9ff
- Shades (toward black): #217cfd, #036bfc, #0260e3, #0253c5, #0246a7, #013a88, #012d6a, #012251, #011532, #000914

## Harmonies

- Complementary: #fdae3f
- Analogous: #3fedfd, #4f3ffd
- Triadic: #fd3f8e, #8efd3f
- Split-complementary: #fd4f3f, #edfd3f
- Tetradic: #fd3fed, #fdae3f, #3ffd4f

## Colors that go with #3f8efd

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 #3f8efd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Blizzard (https://brandsweets.com/colors/brands/blizzard-com), Disney (https://brandsweets.com/colors/brands/disney-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/charcoal
- **Medium Sea Green** #3cb371 [harmony, pool: triadic] — Medium Sea Green completes a triad with #3f8efd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Terminal (https://brandsweets.com/palettes/technical#terminal), Olympics (https://brandsweets.com/colors/brands/olympics-com), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/mediumseagreen
- **Tomato** #ff6347 [harmony, pool: triadic] — Tomato completes a triad with #3f8efd — 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), Abstract (https://brandsweets.com/colors/brands/abstract-com), Substack (https://brandsweets.com/colors/brands/substack-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com). — https://brandsweets.com/colors/tomato
- **Amber** #ffbf00 [pool] — Amber is paired with #3f8efd in 9 real palettes, including Heatwave and Google's brand system, as the supporting colour. Seen in: Heatwave (https://brandsweets.com/palettes/warm#heatwave), Google (https://brandsweets.com/colors/brands/google-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 12 real palettes, including Unity's brand system and Readymag's brand system put Blue beside #3f8efd, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Cargo (https://brandsweets.com/colors/brands/cargo-site). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #3f8efd: 7 real palettes, including Blue Mono and Carrefour's brand system, as the lead colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Behance (https://brandsweets.com/colors/brands/behance-net), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #3f8efd in 5 real palettes, including Behance's brand system and NASCAR's brand system, as the accent. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), NASCAR (https://brandsweets.com/colors/brands/nascar-com), WWE (https://brandsweets.com/colors/brands/wwe-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com). — https://brandsweets.com/colors/crimson
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #3f8efd in 4 real palettes, including Playground and Ahrefs's brand system, as the lead colour. Seen in: Playground (https://brandsweets.com/palettes/bold#playground), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Elastic (https://brandsweets.com/colors/brands/elastic-co), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/darkorange

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

- On white (#ffffff): 3.23:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #086efd (4.51:1); AA: background → #292929 (4.5:1); AAA: text → #0251c0 (7.14:1)
- On black (#000000): 6.5:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4e97fd (7.17:1)

## Brands using this color

- **HashiCorp** — secondary #2b89ff (Δ 1.984) — https://brandsweets.com/colors/brands/hashicorp-com

## 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/3f8efd-9ca8c4-df5d4e-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: "#3f8efd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.