# #6371cf

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

## Values

- Hex: `#6371cf`
- RGB: rgb(99, 113, 207)
- HSL: hsl(232, 53%, 60%)
- OKLCH: oklch(0.583 0.144 274.7)
- Relative luminance: 0.1897
- Nearest named color: Flood (#6677bb, Δ 3.795) — https://brandsweets.com/colors/flood
- Moods: cool, modern
- Page: https://brandsweets.com/colors/6371cf

## Tints & shades

- Tints (toward white): #7380d4, #828ed9, #8e98dc, #9da6e1, #adb5e6, #bdc3eb, #ccd1ef, #d8dcf3, #e8eaf8, #f7f8fd
- Shades (toward black): #4c5cc8, #3b4cbf, #3443a8, #2e3b94, #26327d, #1f2965, #192152, #12173b, #0c1027, #050610

## Harmonies

- Complementary: #cfc163
- Analogous: #63a7cf, #8b63cf
- Triadic: #cf6371, #71cf63
- Split-complementary: #cf8b63, #a7cf63
- Tetradic: #cf63a7, #cfc163, #63cf8b

## Colors that go with #6371cf

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 #6371cf: softer than #000 and cool enough to feel like part of the same palette. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #6371cf — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Intel (https://brandsweets.com/colors/brands/intel-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #6371cf in 12 real palettes, including Wikipedia's brand system and Google's brand system, as the accent. Seen in: Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Google (https://brandsweets.com/colors/brands/google-com), Walmart (https://brandsweets.com/colors/brands/walmart-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 14 real palettes, including Qualcomm's brand system and Pixar's brand system put Blue beside #6371cf, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), BBC (https://brandsweets.com/colors/brands/bbc-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #6371cf: 10 real palettes, including Intel's brand system and General Mills's brand system, as the lead colour. Seen in: Intel (https://brandsweets.com/colors/brands/intel-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #6371cf in 16 real palettes, including Marvel's brand system and Pizza Hut's brand system, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #6371cf: 9 real palettes, including Calm's brand system and Astro's brand system, as the lead colour. Seen in: Calm (https://brandsweets.com/colors/brands/calm-com), Astro (https://brandsweets.com/colors/brands/astro-build), Patreon (https://brandsweets.com/colors/brands/patreon-com), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #6371cf: 6 real palettes, including HashiCorp's brand system and PostHog's brand system, as the supporting colour. Seen in: HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), PostHog (https://brandsweets.com/colors/brands/posthog-com), ASUS (https://brandsweets.com/colors/brands/asus-com), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 4.38:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #5f6ece (4.56:1); AA: background → #0a0a0a (4.52:1); AAA: text → #3b4cbf (7.07:1)
- On black (#000000): 4.79:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #8691da (7.08:1)

## Brands using this color

- **Brilliant** — accent #5d74cc (Δ 1.184) — https://brandsweets.com/colors/brands/brilliant-org

## 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/6371cf-9c9dc4-df864e-231f2d-e9eef1?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: "#6371cf" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.