#AD152B
Closest named color: Rouge (#AB1239). oklch(48% 0.182 21.7), rgb(173, 21, 43).
Aa
White text reads best on this color (7.19:1).
About this color
#AD152B is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.182 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.019 away. White text reads best on it, at 7.19:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.182) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.91:1 |
| White text | 7.19:1 |
Values
| HEX | #AD152B |
| RGB | rgb(173, 21, 43) |
| HSL | hsl(351, 78%, 38%) |
| OKLCH | oklch(48% 0.182 21.7) |
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 #AD152B | 7.19:1 | AAA | Lc -88.1 | Fine for body text |
| Black text on #AD152B | 2.91:1 | Fails | Lc 21.0 | Dividers and decoration only |
| #AD152B text on white | 7.19:1 | AAA | Lc 83.0 | Fine for body text |
| #AD152B text on black | 2.91:1 | Fails | Lc -18.9 | 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
#F8CDCB
oklch(88.5% 0.049 21.2)
-
Step 300
300
#F4AAA7
oklch(80.8% 0.088 21.8)
-
Step 400
400
#EB7979
oklch(70.6% 0.141 21.3)
-
Step 500
500
#E15156
oklch(63.1% 0.179 21.9)
-
Step 600
600
#CD2B3C
oklch(55.6% 0.196 21.5)
-
Step 700
700 (this color)
#AD152B
oklch(48% 0.182 21.7)
-
Step 800
800
#8F1B27
oklch(42.6% 0.15 21.5)
-
Step 900
900
#731F24
oklch(37.7% 0.117 21.6)
-
Step 950
950
#441415
oklch(27% 0.074 22.3)
#AD152B 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) | #49432A | 0.202 |
| Deuteranopia (no green cones) | #6E6225 | 0.182 |
| Tritanopia (no blue cones) | #BF0020 | 0.037 |
| Achromatopsia (no color) | #575757 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD152B
#AD152B
oklch(48% 0.182 21.7)
- #006B71
#006B71
oklch(48% 0.082 201.6)
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 #AD152B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.019
- Firebrick #B22222 ΔE 0.023
- Brown #A52A2A ΔE 0.025
- Rufous #AE2012 ΔE 0.028
- Scarlet #BE0119 ΔE 0.036
- Auburn #9B2226 ΔE 0.037
- Lipstick Red #C0022F ΔE 0.038
- Rust Red #AA2704 ΔE 0.039
Use #AD152B 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.