#AA5131
Closest named color: Sienna (#A0522D). oklch(54% 0.126 39.9), rgb(170, 81, 49).
Aa
White text reads best on this color (5.34:1).
About this color
#AA5131 is a medium-dark, moderately saturated red. In OKLCH its lightness is 54%, its chroma 0.126 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.020 away. White text reads best on it, at 5.34:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.126) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.93:1 |
| White text | 5.34:1 |
Values
| HEX | #AA5131 |
| RGB | rgb(170, 81, 49) |
| HSL | hsl(16, 55%, 43%) |
| OKLCH | oklch(54% 0.126 39.9) |
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 #AA5131 | 5.34:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #AA5131 | 3.93:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #AA5131 text on white | 5.34:1 | AA | Lc 76.1 | Fine for body text |
| #AA5131 text on black | 3.93:1 | AA large text | Lc -25.7 | 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 600.
-
Step 50
50
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F4E6E2
oklch(93.5% 0.016 36.5)
-
Step 200
200
#EDD3CA
oklch(88.6% 0.032 40.1)
-
Step 300
300
#E2B5A6
oklch(80.9% 0.057 39.2)
-
Step 400
400
#D28D76
oklch(70.7% 0.091 39.2)
-
Step 500
500
#C46F52
oklch(63.1% 0.116 39.5)
-
Step 600
600 (this color)
#AA5131
oklch(54% 0.126 39.9)
-
Step 700
700
#964528
oklch(49% 0.117 39.7)
-
Step 800
800
#7A3A23
oklch(42.7% 0.096 40)
-
Step 900
900
#633221
oklch(37.7% 0.076 39.7)
-
Step 950
950
#3A1E14
oklch(27.1% 0.047 40.3)
#AA5131 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) | #695F2E | 0.121 |
| Deuteranopia (no green cones) | #7F722F | 0.110 |
| Tritanopia (no blue cones) | #BA3F4A | 0.061 |
| Achromatopsia (no color) | #6B6B6B | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA5131
#AA5131
oklch(54% 0.126 39.9)
- #007B96
#007B96
oklch(53.9% 0.098 220.3)
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 #AA5131, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.020
- Cinnamon #AC4F06 ΔE 0.027
- Burnt Siena #B75203 ΔE 0.036
- Burnt Umber #A0450E ΔE 0.040
- Sinopia #BB3E03 ΔE 0.045
- Sepia #985E2B ΔE 0.046
- Earth #A2653E ΔE 0.046
- Brick Orange #C14A09 ΔE 0.046
Use #AA5131 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.