#AC4D2B
Closest named color: Sienna (#A0522D). oklch(53.6% 0.134 39.5), rgb(172, 77, 43).
Aa
White text reads best on this color (5.45:1).
About this color
#AC4D2B is a medium-dark, moderately saturated red. In OKLCH its lightness is 54%, its chroma 0.134 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.024 away. White text reads best on it, at 5.45:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.134) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #AC4D2B |
| RGB | rgb(172, 77, 43) |
| HSL | hsl(16, 60%, 42%) |
| OKLCH | oklch(53.6% 0.134 39.5) |
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 #AC4D2B | 5.45:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #AC4D2B | 3.85:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #AC4D2B text on white | 5.45:1 | AA | Lc 76.6 | Fine for body text |
| #AC4D2B text on black | 3.85:1 | AA large text | Lc -25.1 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EED2C9
oklch(88.5% 0.034 38.6)
-
Step 300
300
#E4B4A4
oklch(80.9% 0.06 39.2)
-
Step 400
400
#D48C73
oklch(70.7% 0.095 39.9)
-
Step 500
500
#C76D4E
oklch(63.1% 0.123 39.6)
-
Step 600
600 (this color)
#AC4D2B
oklch(53.6% 0.134 39.5)
-
Step 700
700
#994324
oklch(49.1% 0.124 39.6)
-
Step 800
800
#7D381F
oklch(42.8% 0.103 39.9)
-
Step 900
900
#65311F
oklch(37.8% 0.08 39.5)
-
Step 950
950
#3B1D13
oklch(27% 0.05 39.1)
#AC4D2B 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) | #675C27 | 0.130 |
| Deuteranopia (no green cones) | #7E7129 | 0.118 |
| Tritanopia (no blue cones) | #BD3946 | 0.063 |
| Achromatopsia (no color) | #696969 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC4D2B
#AC4D2B
oklch(53.6% 0.134 39.5)
- #007A94
#007A94
oklch(53.6% 0.097 219.6)
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 #AC4D2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.024
- Cinnamon #AC4F06 ΔE 0.024
- Burnt Siena #B75203 ΔE 0.035
- Burnt Umber #A0450E ΔE 0.036
- Sinopia #BB3E03 ΔE 0.037
- Brick Orange #C14A09 ΔE 0.042
- Burnt Orange #C04E01 ΔE 0.044
- Dull Red #BB3F3F ΔE 0.048
Use #AC4D2B 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.