#AC4F40
Closest named color: Sienna (#A0522D). oklch(54.2% 0.125 30.9), rgb(172, 79, 64).
Aa
White text reads best on this color (5.32:1).
About this color
#AC4F40 is a medium-dark, moderately saturated red. In OKLCH its lightness is 54%, its chroma 0.125 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.034 away. White text reads best on it, at 5.32:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.125) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.94:1 |
| White text | 5.32:1 |
Values
| HEX | #AC4F40 |
| RGB | rgb(172, 79, 64) |
| HSL | hsl(8, 46%, 46%) |
| OKLCH | oklch(54.2% 0.125 30.9) |
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 #AC4F40 | 5.32:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #AC4F40 | 3.94:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #AC4F40 text on white | 5.32:1 | AA | Lc 75.9 | Fine for body text |
| #AC4F40 text on black | 3.94:1 | AA large text | Lc -25.8 | 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
#F5E6E3
oklch(93.6% 0.017 31.1)
-
Step 200
200
#EDD2CD
oklch(88.5% 0.031 30.2)
-
Step 300
300
#E3B4AB
oklch(81% 0.056 30.8)
-
Step 400
400
#D38B7E
oklch(70.7% 0.091 30.7)
-
Step 500
500
#C56D5E
oklch(63.1% 0.115 30.8)
-
Step 600
600 (this color)
#AC4F40
oklch(54.2% 0.125 30.9)
-
Step 700
700
#984336
oklch(49.2% 0.117 30.6)
-
Step 800
800
#7B382D
oklch(42.7% 0.096 31)
-
Step 900
900
#633128
oklch(37.7% 0.074 31.5)
-
Step 950
950
#3A1D18
oklch(26.9% 0.047 30.8)
#AC4F40 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) | #675F3E | 0.128 |
| Deuteranopia (no green cones) | #7E733E | 0.119 |
| Tritanopia (no blue cones) | #BC3E4C | 0.048 |
| Achromatopsia (no color) | #6B6B6B | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC4F40
#AC4F40
oklch(54.2% 0.125 30.9)
- #007D8E
#007D8E
oklch(54.1% 0.094 211.3)
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 #AC4F40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.034
- Dusty Red #B9484E ΔE 0.035
- Dull Red #BB3F3F ΔE 0.039
- Cinnamon #AC4F06 ΔE 0.045
- Light Maroon #A24857 ΔE 0.046
- Dark Rose #B5485D ΔE 0.050
- Sinopia #BB3E03 ΔE 0.050
- Burnt Siena #B75203 ΔE 0.051
Use #AC4F40 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.