diff --git a/web/src/colorspace.ts b/web/src/colorspace.ts
deleted file mode 100644
index 0ee968e373..0000000000
--- a/web/src/colorspace.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-// Convert an sRGB value in [0, 255] to a linear intensity
-// value in [0, 1].
-//
-// https://en.wikipedia.org/wiki/SRGB#The_reverse_transformation
-export function sRGB_to_linear(v: number): number {
-    v = v / 255;
-    if (v <= 0.04045) {
-        return v / 12.92;
-    }
-    return Math.pow((v + 0.055) / 1.055, 2.4);
-}
-
-// Compute luminance (CIE Y stimulus) from linear intensity
-// of sRGB / Rec. 709 primaries.
-export function rgb_luminance(channel: [number, number, number]): number {
-    return 0.2126 * channel[0] + 0.7152 * channel[1] + 0.0722 * channel[2];
-}
-
-// Convert luminance (photometric, CIE Y)
-// to lightness (perceptual, CIE L*)
-//
-// https://en.wikipedia.org/wiki/Lab_color_space#Forward_transformation
-export function luminance_to_lightness(luminance: number): number {
-    let v;
-    if (luminance <= 216 / 24389) {
-        v = (841 / 108) * luminance + 4 / 29;
-    } else {
-        v = Math.pow(luminance, 1 / 3);
-    }
-
-    return 116 * v - 16;
-}
diff --git a/web/tests/colorspace.test.js b/web/tests/colorspace.test.js
deleted file mode 100644
index c4e79988e8..0000000000
--- a/web/tests/colorspace.test.js
+++ /dev/null
@@ -1,39 +0,0 @@
-"use strict";
-
-const {strict: assert} = require("assert");
-
-const {zrequire} = require("./lib/namespace");
-const {run_test} = require("./lib/test");
-
-const colorspace = zrequire("colorspace");
-
-run_test("sRGB_to_linear", () => {
-    let srgb_color = 0.0042;
-    let expected_value = 0.0042 / 255 / 12.92;
-    let actual_value = colorspace.sRGB_to_linear(srgb_color);
-    assert.equal(actual_value, expected_value);
-
-    srgb_color = 255;
-    expected_value = 1;
-    actual_value = colorspace.sRGB_to_linear(srgb_color);
-    assert.equal(actual_value, expected_value);
-});
-
-run_test("rgb_luminance", () => {
-    const channel = [1, 1, 1];
-    const expected_value = 1;
-    const actual_value = colorspace.rgb_luminance(channel);
-    assert.equal(actual_value, expected_value);
-});
-
-run_test("luminance_to_lightness", () => {
-    let luminance = 0;
-    let expected_value = (116 * 4) / 29 - 16;
-    let actual_value = colorspace.luminance_to_lightness(luminance);
-    assert.equal(actual_value, expected_value);
-
-    luminance = 1;
-    expected_value = 100;
-    actual_value = colorspace.luminance_to_lightness(luminance);
-    assert.equal(actual_value, expected_value);
-});