#AC1834
Closest named color: Rouge (#AB1239). oklch(48.2% 0.179 18.5), rgb(172, 24, 52).
Aa
White text reads best on this color (7.15:1).
About this color
#AC1834 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.179 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.010 away. White text reads best on it, at 7.15:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.93:1 |
| White text | 7.15:1 |
Values
| HEX | #AC1834 |
| RGB | rgb(172, 24, 52) |
| HSL | hsl(349, 76%, 38%) |
| OKLCH | oklch(48.2% 0.179 18.5) |
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 #AC1834 | 7.15:1 | AAA | Lc -88.0 | Fine for body text |
| Black text on #AC1834 | 2.93:1 | Fails | Lc 21.0 | Dividers and decoration only |
| #AC1834 text on white | 7.15:1 | AAA | Lc 83.0 | Fine for body text |
| #AC1834 text on black | 2.93:1 | Fails | Lc -18.9 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F8CDCD
oklch(88.5% 0.049 18.1)
-
Step 300
300
#F4AAAB
oklch(80.9% 0.088 18.3)
-
Step 400
400
#EA7A7F
oklch(70.7% 0.138 18.4)
-
Step 500
500
#E0515E
oklch(63.1% 0.178 18.6)
-
Step 600
600
#CB2D45
oklch(55.5% 0.192 18.4)
-
Step 700
700 (this color)
#AC1834
oklch(48.2% 0.179 18.5)
-
Step 800
800
#8E1C2E
oklch(42.6% 0.148 18.2)
-
Step 900
900
#721F29
oklch(37.6% 0.116 18)
-
Step 950
950
#431418
oklch(26.9% 0.073 18.4)
#AC1834 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) | #484434 | 0.200 |
| Deuteranopia (no green cones) | #6D622F | 0.180 |
| Tritanopia (no blue cones) | #BD0025 | 0.036 |
| Achromatopsia (no color) | #585858 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC1834
#AC1834
oklch(48.2% 0.179 18.5)
- #006C6F
#006C6F
oklch(48.2% 0.082 198.2)
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 #AC1834, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.010
- Brown #A52A2A ΔE 0.029
- Firebrick #B22222 ΔE 0.030
- Raspberry #B00149 ΔE 0.036
- Rufous #AE2012 ΔE 0.037
- Rose Red #BE013C ΔE 0.038
- Auburn #9B2226 ΔE 0.039
- Lipstick Red #C0022F ΔE 0.040
Use #AC1834 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.