#AD2A3B
Closest named color: Brown (#A52A2A). oklch(49.8% 0.166 18.9), rgb(173, 42, 59).
Aa
White text reads best on this color (6.62:1).
About this color
#AD2A3B is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.166 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.026 away. White text reads best on it, at 6.62:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.166) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.17:1 |
| White text | 6.62:1 |
Values
| HEX | #AD2A3B |
| RGB | rgb(173, 42, 59) |
| HSL | hsl(352, 61%, 42%) |
| OKLCH | oklch(49.8% 0.166 18.9) |
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 #AD2A3B | 6.62:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #AD2A3B | 3.17:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #AD2A3B text on white | 6.62:1 | AA | Lc 81.4 | Fine for body text |
| #AD2A3B text on black | 3.17:1 | AA large text | Lc -20.4 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F6CECD
oklch(88.5% 0.045 19.7)
-
Step 300
300
#F0ACAC
oklch(80.9% 0.08 19)
-
Step 400
400
#E67D81
oklch(70.7% 0.13 18.5)
-
Step 500
500
#DB5861
oklch(63.2% 0.164 19)
-
Step 600
600
#C63748
oklch(55.6% 0.179 18.8)
-
Step 700
700 (this color)
#AD2A3B
oklch(49.8% 0.166 18.9)
-
Step 800
800
#8B2330
oklch(42.7% 0.139 18.6)
-
Step 900
900
#70242A
oklch(37.8% 0.107 19.3)
-
Step 950
950
#421619
oklch(27.1% 0.068 18.8)
#AD2A3B 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) | #4F4B3B | 0.184 |
| Deuteranopia (no green cones) | #706737 | 0.169 |
| Tritanopia (no blue cones) | #BE0031 | 0.038 |
| Achromatopsia (no color) | #5D5D5D | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD2A3B
#AD2A3B
oklch(49.8% 0.166 18.9)
- #007175
#007175
oklch(49.8% 0.085 199.1)
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 #AD2A3B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.026
- Rouge #AB1239 ΔE 0.027
- Firebrick #B22222 ΔE 0.027
- Rufous #AE2012 ΔE 0.038
- Rose Red #BE013C ΔE 0.040
- Lipstick Red #C0022F ΔE 0.041
- Raspberry #B00149 ΔE 0.045
- Brick #A03623 ΔE 0.045
Use #AD2A3B 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.