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Rust vs Mustard Yellow: What's the Difference?

The main difference between Rust and Mustard Yellow is hue — Rust is a warm orange, while Mustard Yellow is a warm yellow. Rust (#B7410E) has an HSL of 18°, 86%, 39%, whereas Mustard Yellow (#E1AD01) sits at 46°, 99%, 44%.

Rust#B7410E
Mustard Yellow#E1AD01
#B7410EBlended: #CC7708#E1AD01

Rust vs Mustard Yellow: Key Differences at a Glance

Aspect Rust Mustard Yellow
BrightnessDark (L=39%) — rich, serious, substantialMedium (L=44%) — balanced, versatile
SaturationVivid (S=86%) — bright, energetic, eye-catchingVivid (S=99%) — bright, energetic, eye-catching
Hue familyOrangeYellow
TemperatureWarmWarm
Hex code#B7410E#E1AD01
RGB183, 65, 14225, 173, 1

Can you use Rust and Mustard Yellow together?

Mustard Yellow text on Rust
Rust text on Mustard Yellow
Contrast Ratio:2.70:1Insufficient Contrast

How to Tell Rust and Mustard Yellow Apart

  • Check saturation: Mustard Yellow looks more vivid and saturated.
  • Watch the undertone: the hue shifts 28° between them, which changes the perceived temperature.
  • Compare them on a white background to see true saturation, and on black to see true lightness.

When to Use Rust vs Mustard Yellow in Design

Use Rust 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

Rust and Mustard Yellow Hex Codes, RGB & HSL

Rust#B7410E

Rust (#B7410E) is a dark, vivid orange with a warm undertone — it feels rich, serious, substantial and bright, energetic, eye-catching.

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

Rust 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
Rust text on white
5.56:1AA
Sample text preview
Rust text on black
3.78:1AA Large
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
Rust text on Mustard Yellow
2.7:1Fail
Sample text preview
Mustard Yellow text on Rust
2.7:1Fail

Explore Rust and Mustard Yellow individually

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

Rust color page#B7410E · shades, tints, pairingsMustard Yellow color page#E1AD01 · shades, tints, pairings

More Rust and Mustard Yellow Comparisons

Rust vs Mustard Yellow FAQ

What is the difference between rust and mustard yellow?+
The main difference between Rust and Mustard Yellow is hue — Rust is a warm orange, while Mustard Yellow is a warm yellow. Rust (#B7410E) has an HSL of 18°, 86%, 39%, whereas Mustard Yellow (#E1AD01) sits at 46°, 99%, 44%.
Is rust darker than mustard yellow?+
Yes. Rust is darker, with a lightness of 39% in HSL compared to Mustard Yellow at 44% — a 5-point gap.
Are rust and mustard yellow the same color?+
No. Rust is #B7410E and Mustard Yellow is #E1AD01. They differ by 28° in hue, 5% in lightness, and 13% in saturation.
Which is more saturated, rust or mustard yellow?+
Mustard Yellow is more saturated. In HSL, Rust has 86% saturation and Mustard Yellow has 99% — Mustard Yellow is the more vivid of the two, while Rust reads as more muted.
Is rust warm or cool?+
Rust (#B7410E) is a warm orange. Its hue sits at 18° 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 rust and mustard yellow together?+
Yes. Rust (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 rust belong to?+
Rust belongs to the orange family. Its HSL is 18°, 86%, 39% — a warm tone within the broader orange group.
What is the hex code for rust?+
The hex code for Rust is #B7410E. In RGB, that's rgb(183, 65, 14), and in HSL it's hsl(18, 86%, 39%).
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%).