Rust Red #AA2704
Rust Red is a medium-dark, vivid red with hex code #AA2704 and RGB rgb(170, 39, 4).
Aa
White text reads best on this color (6.99:1).
About this color
#AA2704 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.172 and its hue 34°. Its hue sits on the warm side of the wheel. It is the named color Rust Red. White text reads best on it, at 6.99:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.172) |
| Temperature | warm |
| Nearest name | Rust Red |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Colors that go with Rust Red
Matches found by rotating Rust Red around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Rust Red
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Rust Red, closest first.
Similar named colors
The eight named colors closest to Rust Red, with their ΔE distance.
- Rufous #AE2012 ΔE 0.014
- Rusty Red #AF2F0D ΔE 0.017
- Burnt Red #9F2305 ΔE 0.025
- Firebrick #B22222 ΔE 0.026
- Brown #A52A2A ΔE 0.027
- Brick #A03623 ΔE 0.028
- Russet #A13905 ΔE 0.031
- Auburn #9B2226 ΔE 0.042
More about Rust Red
How to make Rust Red
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 4 parts red
- 3 parts brown
- 1 part orange
Recipe result: #A5352C, a difference of ΔE 0.029 from Rust Red. That is very close: most people will not see the difference.
Codes for Rust Red in every format
| HEX | #AA2704 |
| RGB | rgb(170, 39, 4) |
| HSL | hsl(13, 95%, 34%) |
| OKLCH | oklch(48.4% 0.172 33.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #AA2704 | 6.99:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #AA2704 | 3.00:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #AA2704 text on white | 6.99:1 | AA | Lc 82.7 | Fine for body text |
| #AA2704 text on black | 3.00:1 | AA large text | Lc -19.2 | Dividers and decoration only |
Shades and tints of Rust Red
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F6CFC5
oklch(88.5% 0.046 34.7)
-
Step 300
300
#F1AE9D
oklch(81% 0.083 34.8)
-
Step 400
400
#E77F68
oklch(70.7% 0.133 33.5)
-
Step 500
500
#DD5A3D
oklch(63.2% 0.17 34)
-
Step 600
600
#C83918
oklch(55.6% 0.185 33.9)
-
Step 700
700 (this color)
#AA2704
oklch(48.4% 0.172 33.9)
-
Step 800
800
#8C250D
oklch(42.7% 0.142 33.9)
-
Step 900
900
#712514
oklch(37.8% 0.111 34.1)
-
Step 950
950
#42170D
oklch(27% 0.07 34.5)
Rust Red with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #514600 | 0.180 |
| Deuteranopia (no green cones) | #716400 | 0.162 |
| Tritanopia (no blue cones) | #BC0022 | 0.048 |
| Achromatopsia (no color) | #595959 | 0.173 |
Use Rust Red in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.