#AE182A
Closest named color: Firebrick (#B22222). oklch(48.4% 0.181 22.5), rgb(174, 24, 42).
Aa
White text reads best on this color (7.08:1).
About this color
#AE182A is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.181 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.019 away. White text reads best on it, at 7.08:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #AE182A |
| RGB | rgb(174, 24, 42) |
| HSL | hsl(353, 76%, 39%) |
| OKLCH | oklch(48.4% 0.181 22.5) |
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 #AE182A | 7.08:1 | AAA | Lc -87.7 | Fine for body text |
| Black text on #AE182A | 2.96:1 | Fails | Lc 21.3 | Dividers and decoration only |
| #AE182A text on white | 7.08:1 | AAA | Lc 82.7 | Fine for body text |
| #AE182A text on black | 2.96:1 | 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
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F8CDCA
oklch(88.4% 0.049 22.8)
-
Step 300
300
#F4AAA7
oklch(80.8% 0.088 21.8)
-
Step 400
400
#EB7A77
oklch(70.7% 0.14 22.8)
-
Step 500
500
#E15155
oklch(63% 0.179 22.3)
-
Step 600
600
#CD2C3A
oklch(55.6% 0.196 22.3)
-
Step 700
700 (this color)
#AE182A
oklch(48.4% 0.181 22.5)
-
Step 800
800
#8F1C25
oklch(42.7% 0.15 22.7)
-
Step 900
900
#731F23
oklch(37.6% 0.117 22.3)
-
Step 950
950
#441415
oklch(27% 0.074 22.3)
#AE182A 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) | #4A4429 | 0.201 |
| Deuteranopia (no green cones) | #6F6324 | 0.181 |
| Tritanopia (no blue cones) | #C00021 | 0.036 |
| Achromatopsia (no color) | #585858 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AE182A
#AE182A
oklch(48.4% 0.181 22.5)
- #006C73
#006C73
oklch(48.4% 0.082 202.6)
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 #AE182A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.019
- Rouge #AB1239 ΔE 0.023
- Brown #A52A2A ΔE 0.024
- Rufous #AE2012 ΔE 0.025
- Scarlet #BE0119 ΔE 0.034
- Rust Red #AA2704 ΔE 0.036
- Lipstick Red #C0022F ΔE 0.037
- Auburn #9B2226 ΔE 0.039
Use #AE182A 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.