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Copper vs Mustard Yellow: What's the Difference?

The main difference between Copper and Mustard Yellow is hue — Copper is a warm orange, while Mustard Yellow is a warm yellow. Copper (#B87333) has an HSL of 29°, 57%, 46%, whereas Mustard Yellow (#E1AD01) sits at 46°, 99%, 44%.

Copper#B87333
Mustard Yellow#E1AD01
#B87333Blended: #CD901A#E1AD01
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Copper vs Mustard Yellow: Key Differences at a Glance

Aspect Copper Mustard Yellow
BrightnessMedium (L=46%) — balanced, versatileMedium (L=44%) — balanced, versatile
SaturationModerately saturated (S=57%) — balanced in intensityVivid (S=99%) — bright, energetic, eye-catching
Hue familyOrangeYellow
TemperatureWarmWarm
Hex code#B87333#E1AD01
RGB184, 115, 51225, 173, 1

Can you use Copper and Mustard Yellow together?

Mustard Yellow text on Copper
Copper text on Mustard Yellow
Contrast Ratio:1.84:1Insufficient Contrast

How to Tell Copper and Mustard Yellow Apart

  • ●Check saturation: Mustard Yellow looks more vivid and saturated.
  • ●Watch the undertone: the hue shifts 17° between them, which changes the perceived temperature.
  • ●Compare them on a white background to see true saturation, and on black to see true lightness.

Copper or Mustard Yellow: Which to Use and Where

Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.

◆Branding & logos
PickMustard Yellow

Mustard Yellow is more saturated (99% HSL vs 57%) so it reads as bolder and more memorable at logo scale, while Copper can feel washed out when printed small.

▢Web UI & body text backgrounds
PickCopper

Copper hits a 3.79:1 WCAG contrast against white — safer for text-heavy interfaces — where Mustard Yellow only reaches 2.06:1 and risks failing AA at small body sizes.

⬡Fashion & apparel
PickCopper

Copper is a warm tone that flatters spring/summer collections and warmer skin undertones, while Mustard Yellow leans warmer and is better suited to autumn/winter layering.

▣Interior design & walls
PickCopper

Copper is the more muted of the two (57% saturation) and sits more calmly on large wall surfaces, while Mustard Yellow's higher chroma can overwhelm a room when used beyond accent pieces.

When to Use Copper vs Mustard Yellow in Design

Use Copper for:
●Call-to-action buttons
●Autumn and harvest themes
●Food, citrus, warmth branding
●Youthful energetic campaigns
●Friendly notification badges
Use Mustard Yellow for:
●Warning states & highlights
●Children's and summer themes
●Happy, optimistic branding
●Taxi, logistics, signage
●Accent color in palettes

Copper and Mustard Yellow Hex Codes, RGB & HSL

Copper#B87333

Copper (#B87333) is a medium, moderately saturated orange with a warm undertone — it feels balanced, versatile and balanced in intensity.

HEX
RGB
HSL
HSV
CMYK
PANTONE
Shades
Tints
Mustard Yellow#E1AD01

Mustard Yellow (#E1AD01) is a medium, vivid yellow with a warm undertone — it feels balanced, versatile and bright, energetic, eye-catching.

HEX
RGB
HSL
HSV
CMYK
PANTONE
Shades
Tints

Copper and Mustard Yellow WCAG Contrast Ratios

Text legibility depends on the contrast ratio between foreground and background. WCAG 2.1 AA requires at least 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Use these numbers to choose accessible combinations for your design.

Sample text preview
Copper text on white
3.79:1AA Large
Sample text preview
Copper text on black
5.54:1AA
Sample text preview
Mustard Yellow text on white
2.06:1Fail
Sample text preview
Mustard Yellow text on black
10.18:1AAA
Sample text preview
Copper text on Mustard Yellow
1.84:1Fail
Sample text preview
Mustard Yellow text on Copper
1.84:1Fail

Explore Copper and Mustard Yellow individually

Each color has a dedicated page with shades, tints, CSS name, pairings, and color psychology.

Copper color page#B87333 · shades, tints, pairingsMustard Yellow color page#E1AD01 · shades, tints, pairings

More Copper and Mustard Yellow Comparisons

TanvsCopperMustard YellowvsSandCoppervsRustGoldvsMustard YellowRustvsCopperRustvsMustard YellowCoppervsGoldMustard YellowvsHoneyCoppervsNavyMustard YellowvsAmberCoppervsTealCreamvsMustard Yellow

Copper vs Mustard Yellow FAQ

What is the difference between copper and mustard yellow?+
The main difference between Copper and Mustard Yellow is hue — Copper is a warm orange, while Mustard Yellow is a warm yellow. Copper (#B87333) has an HSL of 29°, 57%, 46%, whereas Mustard Yellow (#E1AD01) sits at 46°, 99%, 44%.
Is copper darker than mustard yellow?+
No, they're nearly the same brightness. Copper sits at 46% lightness and Mustard Yellow at 44% — the difference is only 2 percentage points.
Are copper and mustard yellow the same color?+
No. Copper is #B87333 and Mustard Yellow is #E1AD01. They differ by 17° in hue, 2% in lightness, and 42% in saturation.
Which is more saturated, copper or mustard yellow?+
Mustard Yellow is more saturated. In HSL, Copper has 57% saturation and Mustard Yellow has 99% — Mustard Yellow is the more vivid of the two, while Copper reads as more muted.
Is copper warm or cool?+
Copper (#B87333) is a warm orange. Its hue sits at 29° on the color wheel, which places it in the warm range.
Is mustard yellow warm or cool?+
Mustard Yellow (#E1AD01) is a warm yellow. Its hue sits at 46° on the color wheel, which places it in the warm range.
Can you use copper and mustard yellow together?+
Yes. Copper (orange) and Mustard Yellow (yellow) can work as a complementary or analogous pair. Use one as the dominant tone and the other as a 10–20% accent to keep the palette balanced.
What color family does copper belong to?+
Copper belongs to the orange family. Its HSL is 29°, 57%, 46% — a warm tone within the broader orange group.
What is the hex code for copper?+
The hex code for Copper is #B87333. In RGB, that's rgb(184, 115, 51), and in HSL it's hsl(29, 57%, 46%).
What is the hex code for mustard yellow?+
The hex code for Mustard Yellow is #E1AD01. In RGB, that's rgb(225, 173, 1), and in HSL it's hsl(46, 99%, 44%).