#AC4427
Closest named color: Burnt Umber (#A0450E). oklch(52.3% 0.143 36.3), rgb(172, 68, 39).
Aa
White text reads best on this color (5.81:1).
About this color
#AC4427 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.143 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.031 away. White text reads best on it, at 5.81:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #AC4427 |
| RGB | rgb(172, 68, 39) |
| HSL | hsl(13, 63%, 41%) |
| OKLCH | oklch(52.3% 0.143 36.3) |
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 #AC4427 | 5.81:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #AC4427 | 3.61:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #AC4427 text on white | 5.81:1 | AA | Lc 78.3 | Fine for body text |
| #AC4427 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
#F7E6E1
oklch(93.7% 0.02 37)
-
Step 200
200
#F1D1C8
oklch(88.5% 0.038 36.2)
-
Step 300
300
#E9B1A2
oklch(80.8% 0.069 35.5)
-
Step 400
400
#DC876F
oklch(70.7% 0.111 36.6)
-
Step 500
500
#D06649
oklch(63.1% 0.141 36.3)
-
Step 600
600
#BC4A2A
oklch(55.7% 0.154 36.3)
-
Step 700
700 (this color)
#AC4427
oklch(52.3% 0.143 36.3)
-
Step 800
800
#83311A
oklch(42.7% 0.119 36.3)
-
Step 900
900
#6A2C1C
oklch(37.7% 0.093 35.6)
-
Step 950
950
#3E1B11
oklch(27% 0.058 36.8)
#AC4427 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) | #615723 | 0.144 |
| Deuteranopia (no green cones) | #7B6E24 | 0.131 |
| Tritanopia (no blue cones) | #BD2B3E | 0.061 |
| Achromatopsia (no color) | #656565 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC4427
#AC4427
oklch(52.3% 0.143 36.3)
- #00768C
#00768C
oklch(52.2% 0.093 216.8)
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 #AC4427, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.031
- Sinopia #BB3E03 ΔE 0.032
- Sienna #A0522D ΔE 0.034
- Rusty Red #AF2F0D ΔE 0.035
- Cinnamon #AC4F06 ΔE 0.035
- Russet #A13905 ΔE 0.037
- Brick #A03623 ΔE 0.040
- Dull Red #BB3F3F ΔE 0.042
Use #AC4427 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.