#AA2704
Named color: Rust Red. oklch(48.4% 0.172 33.9), 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 |
Values
| 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 |
Tints and shades
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)
#AA2704 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 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA2704
#AA2704
oklch(48.4% 0.172 33.9)
- #006B7C
#006B7C
oklch(48.5% 0.085 213.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #AA2704, closest first.
Similar named colors
The eight closest entries in our named color list, 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
Use #AA2704 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.