#AA243F
Closest named color: Rouge (#AB1239). oklch(48.8% 0.169 15.4), rgb(170, 36, 63).
Aa
White text reads best on this color (6.92:1).
About this color
#AA243F is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.169 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.017 away. White text reads best on it, at 6.92:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 3.03:1 |
| White text | 6.92:1 |
Values
| HEX | #AA243F |
| RGB | rgb(170, 36, 63) |
| HSL | hsl(348, 65%, 40%) |
| OKLCH | oklch(48.8% 0.169 15.4) |
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 #AA243F | 6.92:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #AA243F | 3.03:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #AA243F text on white | 6.92:1 | AA | Lc 82.5 | Fine for body text |
| #AA243F text on black | 3.03:1 | AA large text | Lc -19.4 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#F9E4E5
oklch(93.6% 0.023 14.3)
-
Step 200
200
#F6CECF
oklch(88.6% 0.045 16.3)
-
Step 300
300
#F1ABAF
oklch(80.9% 0.083 15.3)
-
Step 400
400
#E67C85
oklch(70.7% 0.131 15.6)
-
Step 500
500
#DB5667
oklch(63.1% 0.167 15.6)
-
Step 600
600
#C6354F
oklch(55.5% 0.181 15.4)
-
Step 700
700 (this color)
#AA243F
oklch(48.8% 0.169 15.4)
-
Step 800
800
#8B2235
oklch(42.8% 0.14 15.4)
-
Step 900
900
#70222E
oklch(37.7% 0.11 15.2)
-
Step 950
950
#42151B
oklch(27% 0.07 15.1)
#AA243F 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) | #4B483F | 0.187 |
| Deuteranopia (no green cones) | #6D643B | 0.171 |
| Tritanopia (no blue cones) | #BB0030 | 0.038 |
| Achromatopsia (no color) | #5A5A5A | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA243F
#AA243F
oklch(48.8% 0.169 15.4)
- #006E6F
#006E6F
oklch(48.8% 0.083 195.9)
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 #AA243F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.017
- Brown #A52A2A ΔE 0.031
- Raspberry #B00149 ΔE 0.034
- Firebrick #B22222 ΔE 0.037
- Rose Red #BE013C ΔE 0.041
- Auburn #9B2226 ΔE 0.044
- Cranberry #9E003A ΔE 0.045
- Rufous #AE2012 ΔE 0.046
Use #AA243F 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.