#AC2171
Closest named color: Red Violet (#9E0168). oklch(50.5% 0.187 351.2), rgb(172, 33, 113).
Aa
White text reads best on this color (6.54:1).
About this color
#AC2171 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.187 and its hue 351°. Its hue sits on the warm side of the wheel. The nearest named color is Red Violet (#9E0168), ΔE 0.044 away. White text reads best on it, at 6.54:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.187) |
| Temperature | warm |
| Nearest name | Red Violet (#9E0168) |
| Black text | 3.21:1 |
| White text | 6.54:1 |
Values
| HEX | #AC2171 |
| RGB | rgb(172, 33, 113) |
| HSL | hsl(325, 68%, 40%) |
| OKLCH | oklch(50.5% 0.187 351.2) |
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 #AC2171 | 6.54:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #AC2171 | 3.21:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #AC2171 text on white | 6.54:1 | AA | Lc 80.9 | Fine for body text |
| #AC2171 text on black | 3.21:1 | AA large text | Lc -20.9 | 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
#FCF2F6
oklch(97% 0.012 351)
-
Step 100
100
#F9E3EC
oklch(93.6% 0.027 350.9)
-
Step 200
200
#F4CCDD
oklch(88.4% 0.05 350.7)
-
Step 300
300
#EEA9C8
oklch(80.9% 0.09 350.7)
-
Step 400
400
#E378AB
oklch(70.8% 0.144 351.5)
-
Step 500
500
#D74F97
oklch(63.1% 0.185 350.9)
-
Step 600
600
#C22B81
oklch(55.5% 0.2 351.1)
-
Step 700
700 (this color)
#AC2171
oklch(50.5% 0.187 351.2)
-
Step 800
800
#881B59
oklch(42.7% 0.154 351.2)
-
Step 900
900
#6E1E49
oklch(37.8% 0.121 351.4)
-
Step 950
950
#41132B
oklch(27% 0.077 351.2)
#AC2171 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) | #3C4E73 | 0.210 |
| Deuteranopia (no green cones) | #64666E | 0.184 |
| Tritanopia (no blue cones) | #B91247 | 0.069 |
| Achromatopsia (no color) | #5D5D5D | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC2171
#AC2171
oklch(50.5% 0.187 351.2)
- #00765D
#00765D
oklch(50.4% 0.098 171.3)
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 #AC2171, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Violet #9E0168 ΔE 0.044
- Deep Magenta #A0025C ΔE 0.046
- Violet Red #A50055 ΔE 0.048
- Dark Fuchsia #9D0759 ΔE 0.052
- Medium Violet Red #C71585 ΔE 0.060
- Raspberry #B00149 ΔE 0.060
- Warm Purple #952E8F ΔE 0.068
- Light Burgundy #A8415B ΔE 0.070
Use #AC2171 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.