#AC2824
Closest named color: Firebrick (#B22222). oklch(49.1% 0.169 27.4), rgb(172, 40, 36).
Aa
White text reads best on this color (6.81:1).
About this color
#AC2824 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.169 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.012 away. White text reads best on it, at 6.81:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.08:1 |
| White text | 6.81:1 |
Values
| HEX | #AC2824 |
| RGB | rgb(172, 40, 36) |
| HSL | hsl(2, 65%, 41%) |
| OKLCH | oklch(49.1% 0.169 27.4) |
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 #AC2824 | 6.81:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #AC2824 | 3.08:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #AC2824 text on white | 6.81:1 | AA | Lc 82.1 | Fine for body text |
| #AC2824 text on black | 3.08:1 | AA large text | Lc -19.8 | 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 700.
-
Step 50
50
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E4E1
oklch(93.5% 0.023 27.3)
-
Step 200
200
#F6CEC9
oklch(88.4% 0.046 26.4)
-
Step 300
300
#F1ADA4
oklch(80.9% 0.082 27.5)
-
Step 400
400
#E77E73
oklch(70.7% 0.131 27.1)
-
Step 500
500
#DC584E
oklch(63% 0.168 27.2)
-
Step 600
600
#C83831
oklch(55.7% 0.182 27.6)
-
Step 700
700 (this color)
#AC2824
oklch(49.1% 0.169 27.4)
-
Step 800
800
#8C241F
oklch(42.8% 0.14 27.6)
-
Step 900
900
#70241F
oklch(37.6% 0.109 27.3)
-
Step 950
950
#421613
oklch(26.9% 0.069 26.6)
#AC2824 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) | #514822 | 0.181 |
| Deuteranopia (no green cones) | #71651E | 0.166 |
| Tritanopia (no blue cones) | #BE0029 | 0.042 |
| Achromatopsia (no color) | #5B5B5B | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC2824
#AC2824
oklch(49.1% 0.169 27.4)
- #006E79
#006E79
oklch(49.2% 0.084 206.9)
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 #AC2824, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.012
- Rufous #AE2012 ΔE 0.014
- Brown #A52A2A ΔE 0.015
- Rust Red #AA2704 ΔE 0.021
- Rusty Red #AF2F0D ΔE 0.023
- Brick #A03623 ΔE 0.029
- Burnt Red #9F2305 ΔE 0.036
- Scarlet #BE0119 ΔE 0.039
Use #AC2824 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.