# #42b3ab

A color — neutral. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#42b3ab`
- RGB: rgb(66, 179, 171)
- HSL: hsl(176, 46%, 48%)
- OKLCH: oklch(0.701 0.101 188.5)
- Relative luminance: 0.3634
- Nearest named color: lightseagreen (#20b2aa, Δ 1.625) — https://brandsweets.com/colors/lightseagreen
- Moods: neutral
- Page: https://brandsweets.com/colors/42b3ab

## Tints & shades

- Tints (toward white): #50beb7, #63c5bf, #75ccc6, #88d3ce, #9adad6, #ade1dd, #c0e8e5, #d2eeed, #e5f5f4, #f8fcfc
- Shades (toward black): #3da49d, #36918b, #30827d, #29706b, #24615d, #1e524e, #173f3d, #12302e, #0b1e1d, #060f0e

## Harmonies

- Complementary: #b3424a
- Analogous: #42b373, #4282b3
- Triadic: #ab42b3, #b3ab42
- Split-complementary: #b34282, #b37342
- Tetradic: #7342b3, #b3424a, #82b342

## Colors that go with #42b3ab

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 #42b3ab: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), N26 (https://brandsweets.com/colors/brands/n26-com), Lido (https://brandsweets.com/palettes/vivid#lido), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #42b3ab in 5 real palettes, including Undergrowth and Forest Floor, as the supporting colour. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove). — https://brandsweets.com/colors/darkolivegreen
- **Denim** #1560bd [pool] — Designers have shipped Denim with #42b3ab: 4 real palettes, including Open House and Peacock, as the lead colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Peacock (https://brandsweets.com/palettes/vivid#peacock), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #42b3ab: 5 real palettes, including Unity's brand system and Patreon's brand system, as the lead colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Patreon (https://brandsweets.com/colors/brands/patreon-com), Spline (https://brandsweets.com/colors/brands/spline-design), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 7 real palettes, including Ford's brand system and Confluent's brand system put Midnight Blue beside #42b3ab, as the lead colour. Seen in: Ford (https://brandsweets.com/colors/brands/ford-com), Confluent (https://brandsweets.com/colors/brands/confluent-io), SoFi (https://brandsweets.com/colors/brands/sofi-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/midnightblue
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Lido and Diner put Mustard Yellow beside #42b3ab, as the accent. Seen in: Lido (https://brandsweets.com/palettes/vivid#lido), Diner (https://brandsweets.com/palettes/vivid#diner), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/mustard
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #42b3ab in 4 real palettes, including Cursor's brand system and Neon's brand system, as the lead colour. Seen in: Cursor (https://brandsweets.com/colors/brands/cursor-com), Neon (https://brandsweets.com/colors/brands/neon-tech), Launch Orange (https://brandsweets.com/palettes/bold#launch-orange), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/orangered
- **Terracotta** #e2725b [harmony, pool: split] — Terracotta is a split-complement of #42b3ab: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Resort (https://brandsweets.com/palettes/light#resort), Alpine (https://brandsweets.com/palettes/cool#alpine), Harbour (https://brandsweets.com/palettes/cool#harbour). — https://brandsweets.com/colors/terracotta

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

- On white (#ffffff): 2.54:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #30827d (4.55:1); AA: background → #383838 (4.62:1); AAA: text → #24615d (7.14:1); AAA: background → #171717 (7.06:1)
- On black (#000000): 8.27:1 — AA pass, AA-large pass, AAA pass

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/42b3ab-a2bdbe-d4599d-1f282d-e9f1ed?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: "#42b3ab" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.