#AC4220
Closest named color: Burnt Umber (#A0450E). oklch(51.9% 0.147 37.6), rgb(172, 66, 32).
Aa
White text reads best on this color (5.90:1).
About this color
#AC4220 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.147 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.028 away. White text reads best on it, at 5.90:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #AC4220 |
| RGB | rgb(172, 66, 32) |
| HSL | hsl(15, 69%, 40%) |
| OKLCH | oklch(51.9% 0.147 37.6) |
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 #AC4220 | 5.90:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #AC4220 | 3.55:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #AC4220 text on white | 5.90:1 | AA | Lc 78.7 | Fine for body text |
| #AC4220 text on black | 3.55:1 | AA large text | Lc -23.1 | 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 700.
-
Step 50
50
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F7E6E0
oklch(93.7% 0.02 40.5)
-
Step 200
200
#F2D1C7
oklch(88.6% 0.04 37.5)
-
Step 300
300
#EAB1A0
oklch(80.8% 0.071 37.3)
-
Step 400
400
#DD866C
oklch(70.6% 0.114 37.4)
-
Step 500
500
#D16544
oklch(63% 0.145 37.7)
-
Step 600
600
#BD4923
oklch(55.7% 0.158 37.8)
-
Step 700
700 (this color)
#AC4220
oklch(51.9% 0.147 37.6)
-
Step 800
800
#843015
oklch(42.7% 0.122 37.5)
-
Step 900
900
#6A2C19
oklch(37.7% 0.094 37.6)
-
Step 950
950
#3F1A0F
oklch(27% 0.061 37.3)
#AC4220 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) | #60551B | 0.147 |
| Deuteranopia (no green cones) | #7A6D1C | 0.134 |
| Tritanopia (no blue cones) | #BD273B | 0.063 |
| Achromatopsia (no color) | #646464 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC4220
#AC4220
oklch(51.9% 0.147 37.6)
- #00758C
#00758C
oklch(51.9% 0.093 217.8)
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 #AC4220, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.028
- Sinopia #BB3E03 ΔE 0.030
- Rusty Red #AF2F0D ΔE 0.031
- Russet #A13905 ΔE 0.033
- Cinnamon #AC4F06 ΔE 0.035
- Sienna #A0522D ΔE 0.036
- Brick #A03623 ΔE 0.038
- Rust Red #AA2704 ΔE 0.044
Use #AC4220 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.