{
  "id": "terminal-osc/104",
  "family": "terminal-osc",
  "slug": "104",
  "title": "OSC 104 — Reset color palette entry",
  "summary": "OSC 104 ; c ST resets palette color number c back to its built-in default. With no parameter (OSC 104 ST), it resets the ENTIRE palette to defaults. The inverse of OSC 4 (which sets palette colors).",
  "kind": "control-sequence",
  "aliases": [
    "reset color palette",
    "reset ANSI colors",
    "OSC 104",
    "ESC ] 104"
  ],
  "status": "de-facto",
  "verification": "verified",
  "tier": "B",
  "source_url": "https://invisible-island.net/xterm/ctlseqs/ctlseqs.html",
  "source_version": "xterm ctlseqs, patch #410, 2026/04/19",
  "retrieved_date": "2026-05-29",
  "attribution": [
    {
      "claim_ref": "#summary",
      "source_url": "https://invisible-island.net/xterm/ctlseqs/ctlseqs.html",
      "source_version": "xterm patch #410, 2026/04/19",
      "note": "xterm ctlseqs: Ps = 1 0 4 ; c -> Reset Color Number c. It is reset to the color specified by the corresponding X resource. With no parameter, reset all colors. (The 10x family mirrors the OSC set commands offset by 100.)"
    }
  ],
  "see_also": [
    "terminal-osc/4"
  ],
  "ext_type": "terminal-escape@1",
  "ext": {
    "csi_or_osc": "OSC",
    "command_number": 104,
    "frame": {
      "introducer_7bit": "\u001b]",
      "introducer_7bit_readable": "ESC ] (0x1B 0x5D)",
      "introducer_8bit": "",
      "introducer_8bit_readable": "0x9D (single-byte OSC, 8-bit C1)",
      "note": "OSC frame per ECMA-48 5th ed. 1991 / ISO 6429. Command number 104 is an xterm convention; the 10x reset family parallels the set commands (104 resets what 4 set)."
    },
    "terminator": "ST|BEL",
    "terminator_detail": {
      "canonical_ST_7bit": "\u001b\\",
      "canonical_ST_7bit_readable": "ESC \\ (0x1B 0x5C)",
      "canonical_ST_8bit": "œ",
      "canonical_ST_8bit_readable": "0x9C (single-byte ST, 8-bit C1)",
      "alt_BEL": "\u0007",
      "alt_BEL_readable": "BEL (0x07)",
      "note": "ECMA-48 mandates ST; xterm also accepts BEL. Emit ST, accept both."
    },
    "params": [
      {
        "id": "reset-one",
        "anchor": "#reset-one",
        "name": "Reset one color",
        "meaning": "OSC 104 ; c ST resets palette index c (0–255) to its default value (the X resource / built-in default). Multiple indices may be given separated by ';'.",
        "required": false,
        "byte_sequence_ST": "\u001b]104;1\u001b\\",
        "byte_sequence_ST_readable": "ESC ] 1 0 4 ; 1 ESC \\   ==  \\x1b]104;1\\x1b\\\\   (reset palette color 1)",
        "byte_sequence_BEL": "\u001b]104;1\u0007",
        "byte_sequence_BEL_readable": "ESC ] 1 0 4 ; 1 BEL   ==  \\x1b]104;1\\x07",
        "subparams": []
      },
      {
        "id": "reset-all",
        "anchor": "#reset-all",
        "name": "Reset all colors",
        "meaning": "OSC 104 ST with NO parameter resets the entire color palette to defaults at once.",
        "required": false,
        "byte_sequence_ST": "\u001b]104\u001b\\",
        "byte_sequence_ST_readable": "ESC ] 1 0 4 ESC \\   ==  \\x1b]104\\x1b\\\\   (no parameter -> reset all)",
        "byte_sequence_BEL": "\u001b]104\u0007",
        "byte_sequence_BEL_readable": "ESC ] 1 0 4 BEL   ==  \\x1b]104\\x07",
        "subparams": []
      }
    ],
    "gotchas": [
      "OSC 104 with NO parameter resets ALL palette colors; with a parameter it resets only the listed index/indices. Be deliberate about which you emit.",
      "OSC 104 resets indexed palette entries (the OSC 4 colors). The special colors set by OSC 10/11/12 (default fg/bg/cursor) are reset by OSC 110/111/112 respectively — 104 does NOT touch them.",
      "'Default' means the terminal's configured/built-in default, not necessarily black-on-white; what a reset restores depends on the terminal's theme/resources.",
      "Not every terminal that supports OSC 4 supports OSC 104; if reset has no effect, set the colors back explicitly with OSC 4."
    ],
    "v1_smoke_test": {
      "asserts": "OSC 104 reset-one (with index) and reset-all (no parameter) forms are syntactically valid OSC strings in both ST and BEL terminator forms.",
      "behavioral_conformance": "deferred to v2."
    }
  },
  "updated": "2026-05-29T00:00:00Z"
}