#AC0A1F
Closest named color: Rufous (#AE2012). oklch(47.3% 0.187 24.3), rgb(172, 10, 31).
Aa
White text reads best on this color (7.45:1).
About this color
#AC0A1F is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.187 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.025 away. White text reads best on it, at 7.45:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.187) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 2.81:1 |
| White text | 7.45:1 |
Values
| HEX | #AC0A1F |
| RGB | rgb(172, 10, 31) |
| HSL | hsl(352, 89%, 36%) |
| OKLCH | oklch(47.3% 0.187 24.3) |
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 #AC0A1F | 7.45:1 | AAA | Lc -88.6 | Fine for body text |
| Black text on #AC0A1F | 2.81:1 | Fails | Lc 20.4 | Dividers and decoration only |
| #AC0A1F text on white | 7.45:1 | AAA | Lc 83.6 | Fine for body text |
| #AC0A1F text on black | 2.81:1 | Fails | Lc -18.3 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC9
oklch(88.5% 0.05 24.2)
-
Step 300
300
#F6AAA4
oklch(80.9% 0.091 24.3)
-
Step 400
400
#ED7973
oklch(70.7% 0.144 24.4)
-
Step 500
500
#E34F4E
oklch(63% 0.184 24.4)
-
Step 600
600
#CF2832
oklch(55.6% 0.201 24.3)
-
Step 700
700 (this color)
#AC0A1F
oklch(47.3% 0.187 24.3)
-
Step 800
800
#911920
oklch(42.7% 0.154 24.3)
-
Step 900
900
#741E1F
oklch(37.6% 0.12 24.4)
-
Step 950
950
#451313
oklch(27% 0.077 23.8)
#AC0A1F 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) | #47401E | 0.206 |
| Deuteranopia (no green cones) | #6C6017 | 0.186 |
| Tritanopia (no blue cones) | #BE0016 | 0.038 |
| Achromatopsia (no color) | #555555 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC0A1F
#AC0A1F
oklch(47.3% 0.187 24.3)
- #006871
#006871
oklch(47.2% 0.081 205.2)
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 #AC0A1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.025
- Firebrick #B22222 ΔE 0.026
- Brown #A52A2A ΔE 0.028
- Rouge #AB1239 ΔE 0.029
- Carmine #9D0216 ΔE 0.035
- Auburn #9B2226 ΔE 0.035
- Rust Red #AA2704 ΔE 0.035
- Scarlet #BE0119 ΔE 0.037
Use #AC0A1F 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.