WCAG contrast
color.openverbs.com · 4 paid endpoints · listed 2026-10-27
Generate a harmony scheme (complementary, analogous, triadic, tetradic, monochromatic) from a base color.
livelast check 5 days ago
100%valid x402 answers, 72 h
sharedUSDC received on Base, 7 days
28distinct payers, 7 days
69.9score (0-100)
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| POST | color.openverbs.com/v1/contrast Compute the WCAG 2.1 contrast ratio between two colors and whether it passes AA/AAA. | $0.002 | Base |
| POST | color.openverbs.com/v1/convert Parse any CSS color and return it as hex, rgb, hsl, hwb, lab, lch and oklch. | $0.002 | Base |
| POST | color.openverbs.com/v1/nearest-named Find the nearest CSS named color to a given color, by perceptual distance. | $0.002 | Base |
| POST | color.openverbs.com/v1/scheme Generate a harmony scheme (complementary, analogous, triadic, tetradic, monochromatic) from a base color. | $0.002 | Base |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 5 days ago | color.openverbs.com/v1/contrast | 402 | 634 | valid x402 v2 terms |
Income on Base (7 days)
This provider's payout address is shared by several providers, so its income is not shown as its own.
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x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/color.openverbs.com