#A3553B
Closest named color: Sienna (#A0522D). oklch(53.8% 0.11 39), rgb(163, 85, 59).
Aa
White text reads best on this color (5.35:1).
About this color
#A3553B is a medium-dark, moderately saturated red. In OKLCH its lightness is 54%, its chroma 0.110 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.017 away. White text reads best on it, at 5.35:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.110) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.91:1 |
| White text | 5.35:1 |
Values
| HEX | #A3553B |
| RGB | rgb(163, 85, 59) |
| HSL | hsl(15, 47%, 44%) |
| OKLCH | oklch(53.8% 0.11 39) |
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 #A3553B | 5.35:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #A3553B | 3.91:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #A3553B text on white | 5.35:1 | AA | Lc 76.3 | Fine for body text |
| #A3553B text on black | 3.91:1 | AA large text | Lc -25.4 | 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
#CC907C
oklch(70.7% 0.079 39.2)
-
Step 500
500
#BE735A
oklch(63.1% 0.102 39.2)
-
Step 600
600 (this color)
#A3553B
oklch(53.8% 0.11 39)
-
Step 700
700
#914A32
oklch(49.2% 0.103 39.2)
-
Step 800
800
#763D2A
oklch(42.8% 0.085 39.1)
-
Step 900
900
#5F3426
oklch(37.6% 0.066 38.8)
-
Step 950
950
#381F17
oklch(27% 0.042 38.5)
#A3553B 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) | #696038 | 0.106 |
| Deuteranopia (no green cones) | #7C713A | 0.097 |
| Tritanopia (no blue cones) | #B2474F | 0.053 |
| Achromatopsia (no color) | #6B6B6B | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3553B
#A3553B
oklch(53.8% 0.11 39)
- #007B94
#007B94
oklch(53.8% 0.097 218.6)
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 #A3553B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.017
- Cinnamon #AC4F06 ΔE 0.038
- Sepia #985E2B ΔE 0.038
- Earth #A2653E ΔE 0.039
- Burnt Umber #A0450E ΔE 0.045
- Burnt Siena #B75203 ΔE 0.049
- Raw Umber #A75E09 ΔE 0.050
- Warm Brown #964E02 ΔE 0.051
Use #A3553B 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.