#AA142B
Closest named color: Rouge (#AB1239). oklch(47.4% 0.18 21.3), rgb(170, 20, 43).
Aa
White text reads best on this color (7.38:1).
About this color
#AA142B is a medium-dark, vivid red. In OKLCH its lightness is 47%, its chroma 0.180 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.018 away. White text reads best on it, at 7.38:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.180) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #AA142B |
| RGB | rgb(170, 20, 43) |
| HSL | hsl(351, 79%, 37%) |
| OKLCH | oklch(47.4% 0.18 21.3) |
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 #AA142B | 7.38:1 | AAA | Lc -88.7 | Fine for body text |
| Black text on #AA142B | 2.84:1 | Fails | Lc 20.3 | Dividers and decoration only |
| #AA142B text on white | 7.38:1 | AAA | Lc 83.7 | Fine for body text |
| #AA142B text on black | 2.84:1 | Fails | Lc -18.2 | 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
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F8CDCB
oklch(88.5% 0.049 21.2)
-
Step 300
300
#F4AAA8
oklch(80.8% 0.088 20.9)
-
Step 400
400
#EB7A7A
oklch(70.8% 0.14 21.2)
-
Step 500
500
#E15258
oklch(63.2% 0.178 21.4)
-
Step 600
600
#CC2D3E
oklch(55.6% 0.194 21.1)
-
Step 700
700 (this color)
#AA142B
oklch(47.4% 0.18 21.3)
-
Step 800
800
#8F1C28
oklch(42.7% 0.149 21.3)
-
Step 900
900
#732025
oklch(37.8% 0.116 21.4)
-
Step 950
950
#441416
oklch(27% 0.074 21.1)
#AA142B 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) | #47422A | 0.200 |
| Deuteranopia (no green cones) | #6B6126 | 0.182 |
| Tritanopia (no blue cones) | #BB0020 | 0.035 |
| Achromatopsia (no color) | #565656 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA142B
#AA142B
oklch(47.4% 0.18 21.3)
- #00696F
#00696F
oklch(47.4% 0.081 201.7)
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 #AA142B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.018
- Brown #A52A2A ΔE 0.025
- Firebrick #B22222 ΔE 0.029
- Rufous #AE2012 ΔE 0.031
- Auburn #9B2226 ΔE 0.032
- Carmine #9D0216 ΔE 0.037
- Rust Red #AA2704 ΔE 0.041
- Cranberry #9E003A ΔE 0.041
Use #AA142B 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.