From 67dc0ccf40e9c2c5e991d286c340bf19c3b58fe7 Mon Sep 17 00:00:00 2001
From: Jason Hall <jason@chainguard.dev>
Date: Fri, 14 Nov 2025 16:25:47 -0500
Subject: [PATCH] fix eee bug

Signed-off-by: Jason Hall <jason@chainguard.dev>
---
 color_test.go | 12 ++++++++++++
 quantize.go   |  9 ++++++---
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/color_test.go b/color_test.go
index 009d78d..548914e 100644
--- a/color_test.go
+++ b/color_test.go
@@ -93,6 +93,18 @@ func TestParseHex(t *testing.T) {
 			wantANSI: 244, // Gray in ANSI 256 grayscale ramp
 			wantErr:  false,
 		},
+		{
+			desc:     "near-white (eee)",
+			hex:      "eee",
+			wantANSI: 231, // Should map to white, not black
+			wantErr:  false,
+		},
+		{
+			desc:     "near-white (eeeeee)",
+			hex:      "eeeeee",
+			wantANSI: 231, // Should map to white, not black
+			wantErr:  false,
+		},
 		{
 			desc:    "invalid length (too short)",
 			hex:     "ff",
diff --git a/quantize.go b/quantize.go
index 608d09c..b29df70 100644
--- a/quantize.go
+++ b/quantize.go
@@ -35,12 +35,15 @@ func quantizeGrayscale(r, g, b uint8) uint8 {
 	if avg < 8 {
 		return 16 // Black from RGB cube
 	}
-	if avg > 238 {
+	if avg >= 238 {
 		return 231 // White from RGB cube
 	}
 
-	// Map [8, 238] to [0, 23]
-	step := (avg - 8) * 24 / 230
+	// Map [8, 237] to [0, 23]
+	step := (avg - 8) * 24 / 229
+	if step > 23 {
+		step = 23
+	}
 	return 232 + uint8(step)
 }