# #231bc5

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

## Values

- Hex: `#231bc5`
- RGB: rgb(35, 27, 197)
- HSL: hsl(243, 76%, 44%)
- OKLCH: oklch(0.399 0.24 269.7)
- Relative luminance: 0.0517
- Nearest named color: Lapis on Neptune (#1f22d2, Δ 2.437) — https://brandsweets.com/colors/lapis-on-neptune
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/231bc5

## Tints & shades

- Tints (toward white): #271edc, #3e35e3, #534be7, #6d66ea, #827ded, #9893f0, #b2aef4, #c7c5f7, #e1e0fb, #f6f6fe
- Shades (toward black): #2018b4, #1d16a2, #1a1490, #17117e, #130f6c, #100c5a, #0d0a48, #0a0736, #060524, #030212

## Harmonies

- Complementary: #bdc51b
- Analogous: #1b68c5, #791bc5
- Triadic: #c5231b, #1bc523
- Split-complementary: #c5791b, #68c51b
- Tetradic: #c51b68, #bdc51b, #1bc579

## Colors that go with #231bc5

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 #231bc5: softer than #000 and cool enough to feel like part of the same palette. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), HP (https://brandsweets.com/colors/brands/hp-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #231bc5 — 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), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Pepsi (https://brandsweets.com/colors/brands/pepsi-com). — https://brandsweets.com/colors/crimson
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #231bc5: 6 real palettes, including Blue Mono and Qualcomm's brand system, as the supporting colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), 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/cornflowerblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #231bc5: 7 real palettes, including Unilever's brand system and Intel's brand system, as the accent. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-com), Intel (https://brandsweets.com/colors/brands/intel-com), Activision (https://brandsweets.com/colors/brands/activision-com), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #231bc5: 6 real palettes, including Absolut's brand system and Cargo's brand system, as the supporting colour. Seen in: Absolut (https://brandsweets.com/colors/brands/absolut-com), Cargo (https://brandsweets.com/colors/brands/cargo-site), Readymag (https://brandsweets.com/colors/brands/readymag-com), Samsung (https://brandsweets.com/colors/brands/samsung-com). — https://brandsweets.com/colors/dodgerblue
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #231bc5 in 4 real palettes, including Spotify's brand system and Unity's brand system, as the lead colour. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas). — https://brandsweets.com/colors/mediumseagreen
- **Midnight Blue** #191970 [pool] — 11 real palettes, including Blue Mono and Monzo's brand system put Midnight Blue beside #231bc5, as that palette's text colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Monzo (https://brandsweets.com/colors/brands/monzo-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Air France (https://brandsweets.com/colors/brands/airfrance-com). — https://brandsweets.com/colors/midnightblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #231bc5 in 9 real palettes, including Intercom's brand system and Tide's brand system, as the supporting colour. Seen in: Intercom (https://brandsweets.com/colors/brands/intercom-com), Tide (https://brandsweets.com/colors/brands/tide-com), Doordash (https://brandsweets.com/colors/brands/doordash-com), Monzo (https://brandsweets.com/colors/brands/monzo-com). — https://brandsweets.com/colors/orangered

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

- On white (#ffffff): 10.32:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.03:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6962ea (4.54:1); AA: background → #adadad (4.6:1); AAA: text → #8f8aef (7.05:1); AAA: background → #d6d6d6 (7.1:1)

## 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/231bc5-a39cc4-dfa04e-261f2d-e9edf1?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: "#231bc5" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.