#AC2D31
Closest named color: Brown (#A52A2A). oklch(49.7% 0.163 23.9), rgb(172, 45, 49).
Aa
White text reads best on this color (6.61:1).
About this color
#AC2D31 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.163 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.018 away. White text reads best on it, at 6.61:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.17:1 |
| White text | 6.61:1 |
Values
| HEX | #AC2D31 |
| RGB | rgb(172, 45, 49) |
| HSL | hsl(358, 59%, 43%) |
| OKLCH | oklch(49.7% 0.163 23.9) |
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 #AC2D31 | 6.61:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #AC2D31 | 3.17:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #AC2D31 text on white | 6.61:1 | AA | Lc 81.5 | Fine for body text |
| #AC2D31 text on black | 3.17:1 | AA large text | Lc -20.4 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E2
oklch(93.5% 0.023 24.1)
-
Step 200
200
#F5CFCB
oklch(88.6% 0.043 25.1)
-
Step 300
300
#F0ADA8
oklch(80.9% 0.08 23.8)
-
Step 400
400
#E57F7A
oklch(70.8% 0.127 23.7)
-
Step 500
500
#DA5A58
oklch(63.1% 0.162 23.8)
-
Step 600
600
#C53A3D
oklch(55.5% 0.176 23.9)
-
Step 700
700 (this color)
#AC2D31
oklch(49.7% 0.163 23.9)
-
Step 800
800
#8A2628
oklch(42.7% 0.135 23.9)
-
Step 900
900
#6F2525
oklch(37.7% 0.105 23.6)
-
Step 950
950
#411716
oklch(27% 0.066 23.9)
#AC2D31 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) | #524B30 | 0.177 |
| Deuteranopia (no green cones) | #72672D | 0.162 |
| Tritanopia (no blue cones) | #BD0030 | 0.042 |
| Achromatopsia (no color) | #5D5D5D | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC2D31
#AC2D31
oklch(49.7% 0.163 23.9)
- #007078
#007078
oklch(49.7% 0.085 203.5)
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 #AC2D31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.018
- Firebrick #B22222 ΔE 0.019
- Rufous #AE2012 ΔE 0.027
- Rusty Red #AF2F0D ΔE 0.032
- Brick #A03623 ΔE 0.032
- Rust Red #AA2704 ΔE 0.033
- Rouge #AB1239 ΔE 0.037
- Scarlet #BE0119 ΔE 0.043
Use #AC2D31 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.