#AC442D
Closest named color: Sinopia (#BB3E03). oklch(52.3% 0.142 34), rgb(172, 68, 45).
Aa
White text reads best on this color (5.80:1).
About this color
#AC442D is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.142 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.035 away. White text reads best on it, at 5.80:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.142) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #AC442D |
| RGB | rgb(172, 68, 45) |
| HSL | hsl(11, 59%, 43%) |
| OKLCH | oklch(52.3% 0.142 34) |
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 #AC442D | 5.80:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #AC442D | 3.61:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #AC442D text on white | 5.80:1 | AA | Lc 78.3 | Fine for body text |
| #AC442D text on black | 3.61:1 | AA large text | Lc -23.5 | 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 700.
-
Step 50
50
#FBF3F1
oklch(97% 0.009 34.3)
-
Step 100
100
#F7E5E1
oklch(93.5% 0.021 32.5)
-
Step 200
200
#F1D1C9
oklch(88.5% 0.038 34.3)
-
Step 300
300
#E9B1A4
oklch(80.8% 0.068 33.4)
-
Step 400
400
#DC8772
oklch(70.8% 0.11 34.7)
-
Step 500
500
#D0664E
oklch(63.2% 0.14 34)
-
Step 600
600
#BB4A30
oklch(55.6% 0.152 34.4)
-
Step 700
700 (this color)
#AC442D
oklch(52.3% 0.142 34)
-
Step 800
800
#83311F
oklch(42.8% 0.117 34)
-
Step 900
900
#692C1F
oklch(37.6% 0.091 33.5)
-
Step 950
950
#3E1B12
oklch(27.1% 0.057 35.5)
#AC442D 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) | #61572A | 0.143 |
| Deuteranopia (no green cones) | #7A6E2A | 0.133 |
| Tritanopia (no blue cones) | #BD2C3F | 0.057 |
| Achromatopsia (no color) | #656565 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC442D
#AC442D
oklch(52.3% 0.142 34)
- #00778A
#00778A
oklch(52.3% 0.092 213.9)
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 #AC442D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.035
- Burnt Umber #A0450E ΔE 0.035
- Sienna #A0522D ΔE 0.036
- Rusty Red #AF2F0D ΔE 0.036
- Dull Red #BB3F3F ΔE 0.038
- Brick #A03623 ΔE 0.040
- Cinnamon #AC4F06 ΔE 0.040
- Russet #A13905 ΔE 0.040
Use #AC442D 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.