#A3583B
Closest named color: Sienna (#A0522D). oklch(54.3% 0.108 41.4), rgb(163, 88, 59).
Aa
White text reads best on this color (5.22:1).
About this color
#A3583B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 54%, its chroma 0.108 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.019 away. White text reads best on it, at 5.22:1.
| Hue family | Browns |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.108) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #A3583B |
| RGB | rgb(163, 88, 59) |
| HSL | hsl(17, 47%, 44%) |
| OKLCH | oklch(54.3% 0.108 41.4) |
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 #A3583B | 5.22:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #A3583B | 4.01:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #A3583B text on white | 5.22:1 | AA | Lc 75.6 | Fine for body text |
| #A3583B text on black | 4.01:1 | AA large text | Lc -26.1 | 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
#DDB7A9
oklch(80.9% 0.048 41.2)
-
Step 400
400
#CB917B
oklch(70.8% 0.078 41.6)
-
Step 500
500
#BC7459
oklch(63% 0.099 41.2)
-
Step 600
600 (this color)
#A3583B
oklch(54.3% 0.108 41.4)
-
Step 700
700
#8F4B31
oklch(49% 0.1 41.2)
-
Step 800
800
#743E29
oklch(42.6% 0.082 41.6)
-
Step 900
900
#5E3526
oklch(37.6% 0.064 40.7)
-
Step 950
950
#371F16
oklch(26.8% 0.041 41.2)
#A3583B 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 | 0.100 |
| Deuteranopia (no green cones) | #7E733A | 0.093 |
| Tritanopia (no blue cones) | #B24A51 | 0.056 |
| Achromatopsia (no color) | #6C6C6C | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3583B
#A3583B
oklch(54.3% 0.108 41.4)
- #007C99
#007C99
oklch(54.3% 0.1 221.7)
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 #A3583B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.019
- Earth #A2653E ΔE 0.032
- Sepia #985E2B ΔE 0.034
- Cinnamon #AC4F06 ΔE 0.038
- Raw Umber #A75E09 ΔE 0.044
- Burnt Siena #B75203 ΔE 0.048
- Burnt Umber #A0450E ΔE 0.049
- Cocoa #875F42 ΔE 0.051
Use #A3583B 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.