#A3521E
Closest named color: Sienna (#A0522D). oklch(52.9% 0.124 49.3), rgb(163, 82, 30).
Aa
White text reads best on this color (5.55:1).
About this color
#A3521E is a medium-dark, moderately saturated brown. In OKLCH its lightness is 53%, its chroma 0.124 and its hue 49°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.014 away. White text reads best on it, at 5.55:1.
| Hue family | Browns |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.124) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.78:1 |
| White text | 5.55:1 |
Values
| HEX | #A3521E |
| RGB | rgb(163, 82, 30) |
| HSL | hsl(23, 69%, 38%) |
| OKLCH | oklch(52.9% 0.124 49.3) |
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 #A3521E | 5.55:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #A3521E | 3.78:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #A3521E text on white | 5.55:1 | AA | Lc 77.2 | Fine for body text |
| #A3521E text on black | 3.78:1 | AA large text | Lc -24.5 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F3E7E1
oklch(93.6% 0.015 48.6)
-
Step 200
200
#EBD4C8
oklch(88.6% 0.03 49.4)
-
Step 300
300
#DFB7A1
oklch(80.9% 0.055 50.4)
-
Step 400
400
#CE906E
oklch(70.7% 0.089 49.6)
-
Step 500
500
#C07347
oklch(63.1% 0.114 49.4)
-
Step 600
600 (this color)
#A3521E
oklch(52.9% 0.124 49.3)
-
Step 700
700
#93491A
oklch(49% 0.115 49)
-
Step 800
800
#783D18
oklch(42.8% 0.096 49.5)
-
Step 900
900
#61341A
oklch(37.7% 0.075 49)
-
Step 950
950
#391F10
oklch(27% 0.048 49.7)
#A3521E 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) | #695D16 | 0.109 |
| Deuteranopia (no green cones) | #7D6F1C | 0.098 |
| Tritanopia (no blue cones) | #B34048 | 0.074 |
| Achromatopsia (no color) | #686868 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3521E
#A3521E
oklch(52.9% 0.124 49.3)
- #00769C
#00769C
oklch(52.9% 0.105 229.5)
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 #A3521E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.014
- Cinnamon #AC4F06 ΔE 0.018
- Burnt Umber #A0450E ΔE 0.030
- Sepia #985E2B ΔE 0.032
- Warm Brown #964E02 ΔE 0.032
- Raw Umber #A75E09 ΔE 0.035
- Burnt Siena #B75203 ΔE 0.039
- Earth #A2653E ΔE 0.046
Use #A3521E 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.