#A6573B
Closest named color: Sienna (#A0522D). oklch(54.5% 0.112 40), rgb(166, 87, 59).
Aa
White text reads best on this color (5.18:1).
About this color
#A6573B is a medium-dark, moderately saturated red. In OKLCH its lightness is 55%, its chroma 0.112 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.021 away. White text reads best on it, at 5.18:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.112) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.04:1 |
| White text | 5.18:1 |
Values
| HEX | #A6573B |
| RGB | rgb(166, 87, 59) |
| HSL | hsl(16, 48%, 44%) |
| OKLCH | oklch(54.5% 0.112 40) |
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 #A6573B | 5.18:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #A6573B | 4.04:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #A6573B text on white | 5.18:1 | AA | Lc 75.3 | Fine for body text |
| #A6573B text on black | 4.04:1 | AA large text | Lc -26.4 | 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
#EAD3CC
oklch(88.4% 0.027 37.6)
-
Step 300
300
#DEB6A9
oklch(80.8% 0.05 38.8)
-
Step 400
400
#CD907B
oklch(70.8% 0.081 39.8)
-
Step 500
500
#BE7359
oklch(63.1% 0.103 39.8)
-
Step 600
600 (this color)
#A6573B
oklch(54.5% 0.112 40)
-
Step 700
700
#914A30
oklch(49.1% 0.103 40.4)
-
Step 800
800
#763D29
oklch(42.8% 0.086 39.8)
-
Step 900
900
#5F3425
oklch(37.6% 0.067 39.9)
-
Step 950
950
#381F16
oklch(27% 0.042 40.5)
#A6573B 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) | #6C6238 | 0.106 |
| Deuteranopia (no green cones) | #7F733A | 0.097 |
| Tritanopia (no blue cones) | #B54850 | 0.055 |
| Achromatopsia (no color) | #6D6D6D | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A6573B
#A6573B
oklch(54.5% 0.112 40)
- #007D98
#007D98
oklch(54.5% 0.099 220)
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 #A6573B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.021
- Earth #A2653E ΔE 0.034
- Cinnamon #AC4F06 ΔE 0.037
- Sepia #985E2B ΔE 0.038
- Burnt Siena #B75203 ΔE 0.044
- Raw Umber #A75E09 ΔE 0.046
- Burnt Umber #A0450E ΔE 0.050
- Copper #B66325 ΔE 0.052
Use #A6573B 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.