#AC1D34
Closest named color: Rouge (#AB1239). oklch(48.5% 0.176 19.3), rgb(172, 29, 52).
Aa
White text reads best on this color (7.04:1).
About this color
#AC1D34 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.176 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.015 away. White text reads best on it, at 7.04:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.176) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.97:1 |
| White text | 7.04:1 |
Values
| HEX | #AC1D34 |
| RGB | rgb(172, 29, 52) |
| HSL | hsl(350, 71%, 39%) |
| OKLCH | oklch(48.5% 0.176 19.3) |
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 #AC1D34 | 7.04:1 | AAA | Lc -87.8 | Fine for body text |
| Black text on #AC1D34 | 2.97:1 | Fails | Lc 21.3 | Dividers and decoration only |
| #AC1D34 text on white | 7.04:1 | AAA | Lc 82.7 | Fine for body text |
| #AC1D34 text on black | 2.97:1 | Fails | Lc -19.2 | 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
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F7CDCD
oklch(88.4% 0.048 18.1)
-
Step 300
300
#F3ABAB
oklch(81% 0.085 19.1)
-
Step 400
400
#E97B7E
oklch(70.7% 0.136 19.4)
-
Step 500
500
#DF535E
oklch(63.1% 0.174 19.1)
-
Step 600
600
#CA3044
oklch(55.6% 0.189 19.3)
-
Step 700
700 (this color)
#AC1D34
oklch(48.5% 0.176 19.3)
-
Step 800
800
#8D1E2D
oklch(42.6% 0.145 19.1)
-
Step 900
900
#722128
oklch(37.8% 0.113 19.6)
-
Step 950
950
#431518
oklch(27.1% 0.071 19.4)
#AC1D34 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) | #4A4534 | 0.195 |
| Deuteranopia (no green cones) | #6D632F | 0.178 |
| Tritanopia (no blue cones) | #BD0028 | 0.035 |
| Achromatopsia (no color) | #595959 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC1D34
#AC1D34
oklch(48.5% 0.176 19.3)
- #006D71
#006D71
oklch(48.6% 0.083 199.2)
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 #AC1D34, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.015
- Brown #A52A2A ΔE 0.025
- Firebrick #B22222 ΔE 0.027
- Rufous #AE2012 ΔE 0.034
- Rose Red #BE013C ΔE 0.038
- Auburn #9B2226 ΔE 0.039
- Raspberry #B00149 ΔE 0.039
- Lipstick Red #C0022F ΔE 0.039
Use #AC1D34 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.