# #137ffb

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

## Values

- Hex: `#137ffb`
- RGB: rgb(19, 127, 251)
- HSL: hsl(212, 97%, 53%)
- OKLCH: oklch(0.612 0.206 256.6)
- Relative luminance: 0.2228
- Nearest named color: Azure (#007fff, Δ 0.668) — https://brandsweets.com/colors/azure-2
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/137ffb

## Tints & shades

- Tints (toward white): #2c8dfc, #4098fc, #59a5fc, #6db0fd, #86befd, #9bc9fd, #b4d6fe, #c8e1fe, #e1efff, #f5faff
- Shades (toward black): #0472f1, #0367d8, #035bbf, #034fa6, #024592, #023979, #012d5f, #012146, #01152d, #000a14

## Harmonies

- Complementary: #fb8f13
- Analogous: #13f4fb, #1b13fb
- Triadic: #fb137f, #7ffb13
- Split-complementary: #fb1b13, #f4fb13
- Tetradic: #fb13f4, #fb8f13, #13fb1b

## Colors that go with #137ffb

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 #137ffb: softer than #000 and cool enough to feel like part of the same palette. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Docker (https://brandsweets.com/colors/brands/docker-com), Zoom (https://brandsweets.com/colors/brands/zoom-us), Blizzard (https://brandsweets.com/colors/brands/blizzard-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #137ffb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), WWE (https://brandsweets.com/colors/brands/wwe-com), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), Toyota (https://brandsweets.com/colors/brands/toyota-com). — https://brandsweets.com/colors/crimson
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #137ffb on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #137ffb in 9 real palettes, including Google's brand system and Heatwave, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Walmart (https://brandsweets.com/colors/brands/walmart-com), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 13 real palettes, including Cargo's brand system and Samsung's brand system put Blue beside #137ffb, as the accent. Seen in: Cargo (https://brandsweets.com/colors/brands/cargo-site), Samsung (https://brandsweets.com/colors/brands/samsung-com), Penpot (https://brandsweets.com/colors/brands/penpot-app), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #137ffb: 11 real palettes, including Carrefour's brand system and Behance's brand system, as the accent. Seen in: Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Behance (https://brandsweets.com/colors/brands/behance-net), Nokia (https://brandsweets.com/colors/brands/nokia-com), Nivea (https://brandsweets.com/colors/brands/nivea-com). — https://brandsweets.com/colors/cobalt
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #137ffb: 9 real palettes, including Venmo's brand system and Patreon's brand system, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Patreon (https://brandsweets.com/colors/brands/patreon-com), Elastic (https://brandsweets.com/colors/brands/elastic-co), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #137ffb: 17 real palettes, including Coursera's brand system and Venmo's brand system, as the accent. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), Venmo (https://brandsweets.com/colors/brands/venmo-com), Guinness (https://brandsweets.com/colors/brands/guinness-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 3.85:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #0470ec (4.63:1); AA: background → #1a1a1a (4.52:1); AAA: text → #0353b0 (7.32:1)
- On black (#000000): 5.46:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4098fc (7.11:1)

## Brands using this color

- **Opensea** — primary #0484fc (Δ 1.228) — https://brandsweets.com/colors/brands/opensea-io
- **PostHog** — secondary #2f80fa (Δ 1.263) — https://brandsweets.com/colors/brands/posthog-com
- **Bluesky Social** — primary #1484fc (Δ 1.281) — https://brandsweets.com/colors/brands/bsky-app
- **OnePlus** — secondary #007bff (Δ 1.319) — https://brandsweets.com/colors/brands/oneplus-com
- **Bluesky Social** — secondary #0085ff (Δ 1.533) — https://brandsweets.com/colors/brands/bsky-app
- **Absolut** — secondary #007aff (Δ 1.54) — https://brandsweets.com/colors/brands/absolut-com
- **Abstract** — accent #007aff (Δ 1.54) — https://brandsweets.com/colors/brands/abstract-com
- **ASUS** — secondary #007aff (Δ 1.54) — https://brandsweets.com/colors/brands/asus-com
- **Cargo** — primary #007aff (Δ 1.54) — https://brandsweets.com/colors/brands/cargo-site
- **Databricks** — accent #007aff (Δ 1.54) — https://brandsweets.com/colors/brands/databricks-com
- **Liquid Death** — secondary #007aff (Δ 1.54) — https://brandsweets.com/colors/brands/liquiddeath-com
- **PostHog** — primary #007aff (Δ 1.54) — https://brandsweets.com/colors/brands/posthog-com
- **Samsung** — secondary #007aff (Δ 1.54) — https://brandsweets.com/colors/brands/samsung-com
- **Confluent** — secondary #0079ff (Δ 1.768) — https://brandsweets.com/colors/brands/confluent-io

## 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/137ffb-9caac4-df564e-1f202d-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: "#137ffb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.