Brown color · XKCD survey name
Mustard Brown Color Code: #AC7E04
The HEX code for Mustard Brown is #AC7E04. It is a medium-dark, vivid orange color made of 172 red, 126 green and 4 blue (HSL 44°, 95%, 35%). Black text reads best on it (5.74:1 contrast).
Mustard Brown color values
#AC7E04
rgb(172, 126, 4)
hsl(44, 95%, 35%)
44, 98%, 67%
hwb(44 2% 33%)
0%, 27%, 98%, 33%
11304452
CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.
What is Mustard Brown?
“Mustard Brown” is a crowd-sourced name from the XKCD Color Survey, in which participants typed names for colors they were shown. It is a popular everyday label rather than an official standard.
Its hue angle of 44° places it in the orange part of the color wheel, with 95% saturation (vivid) and 35% lightness (medium-dark). It is a warm color.
Compared with the other brown colors in the Aqeeb Studio library, it is lighter than 25% of them and more saturated than 77% of them.
Its relative luminance is 0.237, which makes it a mid-tone color. That is above the 0.179 crossover point at which black and white text have equal contrast, so black text has the advantage.
Mustard Brown counts as a light color: its HSL lightness is 35% and its relative luminance is 0.237. Black text reads best on it (5.74:1 contrast).
Text contrast on Mustard Brown
| Text | Preview | Ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|---|
| White text | Sample text | 3.65:1 Limited | Fail | Pass | Fail | Fail |
| Black text | Sample text | 5.74:1 Good | Pass | Pass | Fail | Pass |
Ratios use the WCAG 2 formula and are truncated, never rounded up. Test any pair with the contrast checker.
Colors that go with Mustard Brown
Complementary color
Complementary colors sit directly opposite each other on the color wheel (180° apart). They give the strongest hue contrast, which suits calls to action and accents.
Analogous colors
Analogous colors are neighbors on the wheel, 30° either side of the base hue. They blend smoothly and are easy to combine in backgrounds, gradients and illustrations.
Triadic colors
A triadic scheme uses three hues spaced 120° apart. It is lively yet balanced, and works best when one color leads and the other two act as accents.
Split-complementary colors
Split-complementary keeps the base color and uses the two colors on either side of its complement (150° and 210°). The contrast is strong but gentler than a direct complement.
Tetradic colors
A tetradic (rectangle) scheme combines two complementary pairs at 0°, 60°, 180° and 240°. It offers variety but needs one dominant color to stay balanced.
Monochromatic variants
Monochromatic variants keep the same hue and saturation and only change lightness, which makes them dependable for UI scales and subtle layered designs.
A “≈” before a name means the exact harmony color has no named match, so the link goes to the closest named color.
Tints and shades of Mustard Brown
Lighter tints (mixed with white)
Darker shades (mixed with black)
Select any swatch to copy its HEX code. Build longer scales with the tints and shades tool.
Similar colors
Where to use Mustard Brown
- Card, highlight and section backgrounds with dark text (5.74:1 contrast with black)
- Accents that need to stand out: call-to-action buttons, charts and illustrations
- Large headings, icons and graphics, where a 3:1 contrast ratio is enough
- Earthy, natural palettes
- Packaging and craft-style layouts
- Warm neutrals alongside cream and green
Use Mustard Brown in CSS
:root {
--color-mustard-brown: #AC7E04;
}
.element {
color: var(--color-mustard-brown);
background-color: #AC7E04;
border: 2px solid #AC7E04;
}Questions about Mustard Brown
What is the HEX code for Mustard Brown?
Mustard Brown is #AC7E04.
What is the RGB value of Mustard Brown?
The RGB value of Mustard Brown is 172, 126, 4: 172 red, 126 green and 4 blue on a 0–255 scale, written rgb(172, 126, 4) in CSS.
What is the HSL value of Mustard Brown?
The HSL value of Mustard Brown is 44°, 95%, 35% (hue, saturation, lightness), written hsl(44, 95%, 35%) in CSS.
What is the CMYK value of Mustard Brown?
A standard conversion gives about C 0%, M 27%, Y 98%, K 33%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.
Is Mustard Brown a light or dark color?
Mustard Brown counts as a light color: its HSL lightness is 35% and its relative luminance is 0.237. Black text reads best on it (5.74:1 contrast).
How does Mustard Brown look with white text?
White text on Mustard Brown has a contrast ratio of 3.65:1, rated Limited. It does not reach WCAG AA for normal text; use large text only.
How does Mustard Brown look with black text?
Black text on Mustard Brown has a contrast ratio of 5.74:1, rated Good. It meets WCAG AA for normal text.
What colors go well with Mustard Brown?
Sapphire is its complementary color, and Rust Red sits beside it as an analogous color. Lighter and darker variants of the same hue also work well for monochromatic palettes.
Where can Mustard Brown be used?
It suits card, highlight and section backgrounds with dark text (5.74:1 contrast with black); accents that need to stand out: call-to-action buttons, charts and illustrations; large headings, icons and graphics, where a 3:1 contrast ratio is enough.
How do I use Mustard Brown in CSS?
Use color: #AC7E04; for text, background-color: #AC7E04; for fills, or define a custom property such as --color-mustard-brown: #AC7E04; and reuse it with var(--color-mustard-brown).
About this color page
Crowd-sourced name from the XKCD Color Survey (CC0). Values are calculated from the HEX code; color names are labels, not trademarks or standards unless stated. Screens render colors differently, so always check important colors on your own device. See the disclaimer.