#AC2A40
Closest named color: Rouge (#AB1239). oklch(49.7% 0.165 16.5), rgb(172, 42, 64).
Aa
White text reads best on this color (6.64:1).
About this color
#AC2A40 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.165 and its hue 16°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.025 away. White text reads best on it, at 6.64:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.165) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #AC2A40 |
| RGB | rgb(172, 42, 64) |
| HSL | hsl(350, 61%, 42%) |
| OKLCH | oklch(49.7% 0.165 16.5) |
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 #AC2A40 | 6.64:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #AC2A40 | 3.15:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #AC2A40 text on white | 6.64:1 | AA | Lc 81.6 | Fine for body text |
| #AC2A40 text on black | 3.15:1 | AA large text | Lc -20.3 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F5CECF
oklch(88.5% 0.044 16.3)
-
Step 300
300
#F0ACAF
oklch(80.9% 0.08 16.1)
-
Step 400
400
#E57D84
oklch(70.7% 0.128 16.6)
-
Step 500
500
#DA5866
oklch(63.2% 0.163 16.6)
-
Step 600
600
#C5374D
oklch(55.5% 0.178 16.6)
-
Step 700
700 (this color)
#AC2A40
oklch(49.7% 0.165 16.5)
-
Step 800
800
#8A2434
oklch(42.8% 0.136 16.4)
-
Step 900
900
#6F242D
oklch(37.7% 0.106 16.8)
-
Step 950
950
#41161B
oklch(26.9% 0.067 15.7)
#AC2A40 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) | #4E4B40 | 0.183 |
| Deuteranopia (no green cones) | #6F663C | 0.168 |
| Tritanopia (no blue cones) | #BD0033 | 0.039 |
| Achromatopsia (no color) | #5C5C5C | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC2A40
#AC2A40
oklch(49.7% 0.165 16.5)
- #007172
#007172
oklch(49.7% 0.085 195.9)
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 #AC2A40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.025
- Brown #A52A2A ΔE 0.031
- Firebrick #B22222 ΔE 0.034
- Raspberry #B00149 ΔE 0.040
- Rose Red #BE013C ΔE 0.040
- Lipstick Red #C0022F ΔE 0.044
- Rufous #AE2012 ΔE 0.045
- Light Burgundy #A8415B ΔE 0.045
Use #AC2A40 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.