#AA143A
Closest named color: Rouge (#AB1239). oklch(47.7% 0.18 15.2), rgb(170, 20, 58).
Aa
White text reads best on this color (7.31:1).
About this color
#AA143A is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.180 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.002 away. White text reads best on it, at 7.31:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.180) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.87:1 |
| White text | 7.31:1 |
Values
| HEX | #AA143A |
| RGB | rgb(170, 20, 58) |
| HSL | hsl(345, 79%, 37%) |
| OKLCH | oklch(47.7% 0.18 15.2) |
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 #AA143A | 7.31:1 | AAA | Lc -88.5 | Fine for body text |
| Black text on #AA143A | 2.87:1 | Fails | Lc 20.5 | Dividers and decoration only |
| #AA143A text on white | 7.31:1 | AAA | Lc 83.5 | Fine for body text |
| #AA143A text on black | 2.87:1 | Fails | Lc -18.4 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FAE3E4
oklch(93.5% 0.025 14.6)
-
Step 200
200
#F8CDCF
oklch(88.6% 0.049 15)
-
Step 300
300
#F3AAAE
oklch(80.9% 0.086 15.5)
-
Step 400
400
#EA7984
oklch(70.7% 0.14 15.2)
-
Step 500
500
#E05165
oklch(63.2% 0.178 15.6)
-
Step 600
600
#CB2C4D
oklch(55.6% 0.193 15.2)
-
Step 700
700 (this color)
#AA143A
oklch(47.7% 0.18 15.2)
-
Step 800
800
#8E1B33
oklch(42.7% 0.149 15.3)
-
Step 900
900
#721F2D
oklch(37.7% 0.116 15)
-
Step 950
950
#43141A
oklch(27% 0.073 15.8)
#AA143A 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) | #45433A | 0.202 |
| Deuteranopia (no green cones) | #6A6136 | 0.183 |
| Tritanopia (no blue cones) | #BB0026 | 0.040 |
| Achromatopsia (no color) | #565656 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA143A
#AA143A
oklch(47.7% 0.18 15.2)
- #006B6B
#006B6B
oklch(47.8% 0.082 194.8)
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 #AA143A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.002
- Raspberry #B00149 ΔE 0.028
- Cranberry #9E003A ΔE 0.033
- Brown #A52A2A ΔE 0.037
- Rose Red #BE013C ΔE 0.040
- Firebrick #B22222 ΔE 0.041
- Auburn #9B2226 ΔE 0.042
- Lipstick Red #C0022F ΔE 0.046
Use #AA143A 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.