#A3573E
Closest named color: Sienna (#A0522D). oklch(54.2% 0.107 38.9), rgb(163, 87, 62).
Aa
White text reads best on this color (5.26:1).
About this color
#A3573E is a medium-dark, moderately saturated red. In OKLCH its lightness is 54%, its chroma 0.107 and its hue 39°. 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 5.26:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.107) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.99:1 |
| White text | 5.26:1 |
Values
| HEX | #A3573E |
| RGB | rgb(163, 87, 62) |
| HSL | hsl(15, 45%, 44%) |
| OKLCH | oklch(54.2% 0.107 38.9) |
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 #A3573E | 5.26:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #A3573E | 3.99:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #A3573E text on white | 5.26:1 | AA | Lc 75.8 | Fine for body text |
| #A3573E text on black | 3.99:1 | AA large text | Lc -25.9 | 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
#F3E7E3
oklch(93.6% 0.014 39.4)
-
Step 200
200
#EAD4CC
oklch(88.6% 0.027 41.1)
-
Step 300
300
#DDB7AA
oklch(80.9% 0.048 39.8)
-
Step 400
400
#CB907D
oklch(70.6% 0.077 38.6)
-
Step 500
500
#BC745C
oklch(63.1% 0.098 39.2)
-
Step 600
600 (this color)
#A3573E
oklch(54.2% 0.107 38.9)
-
Step 700
700
#904B34
oklch(49.2% 0.1 39)
-
Step 800
800
#753E2B
oklch(42.8% 0.083 39.6)
-
Step 900
900
#5E3527
oklch(37.6% 0.064 39.5)
-
Step 950
950
#371F17
oklch(26.9% 0.04 39.2)
#A3573E 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) | #6B623C | 0.102 |
| Deuteranopia (no green cones) | #7D723D | 0.094 |
| Tritanopia (no blue cones) | #B24951 | 0.053 |
| Achromatopsia (no color) | #6C6C6C | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3573E
#A3573E
oklch(54.2% 0.107 38.9)
- #007C95
#007C95
oklch(54.1% 0.098 218.5)
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 #A3573E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.020
- Earth #A2653E ΔE 0.035
- Sepia #985E2B ΔE 0.038
- Cinnamon #AC4F06 ΔE 0.041
- Raw Umber #A75E09 ΔE 0.049
- Burnt Umber #A0450E ΔE 0.050
- Burnt Siena #B75203 ΔE 0.051
- Cocoa #875F42 ΔE 0.052
Use #A3573E 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.