#AD2D36
Closest named color: Firebrick (#B22222). oklch(50% 0.164 21.9), rgb(173, 45, 54).
Aa
White text reads best on this color (6.55:1).
About this color
#AD2D36 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.164 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.022 away. White text reads best on it, at 6.55:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.164) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #AD2D36 |
| RGB | rgb(173, 45, 54) |
| HSL | hsl(356, 59%, 43%) |
| OKLCH | oklch(50% 0.164 21.9) |
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 #AD2D36 | 6.55:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #AD2D36 | 3.20:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #AD2D36 text on white | 6.55:1 | AA | Lc 81.2 | Fine for body text |
| #AD2D36 text on black | 3.20:1 | AA large text | Lc -20.7 | 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
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F5CECC
oklch(88.4% 0.044 21.5)
-
Step 300
300
#F0ADAA
oklch(81% 0.079 21.8)
-
Step 400
400
#E57E7D
oklch(70.7% 0.128 21.4)
-
Step 500
500
#DA595C
oklch(63.1% 0.162 21.6)
-
Step 600
600
#C53942
oklch(55.5% 0.176 21.7)
-
Step 700
700 (this color)
#AD2D36
oklch(50% 0.164 21.9)
-
Step 800
800
#8A252B
oklch(42.7% 0.136 21.9)
-
Step 900
900
#6F2527
oklch(37.7% 0.105 22.1)
-
Step 950
950
#411717
oklch(27% 0.066 22.5)
#AD2D36 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) | #524C35 | 0.178 |
| Deuteranopia (no green cones) | #726732 | 0.163 |
| Tritanopia (no blue cones) | #BE0032 | 0.041 |
| Achromatopsia (no color) | #5D5D5D | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD2D36
#AD2D36
oklch(50% 0.164 21.9)
- #007178
#007178
oklch(50% 0.085 202.3)
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 #AD2D36, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.022
- Brown #A52A2A ΔE 0.022
- Rufous #AE2012 ΔE 0.032
- Rouge #AB1239 ΔE 0.034
- Rusty Red #AF2F0D ΔE 0.037
- Brick #A03623 ΔE 0.038
- Rust Red #AA2704 ΔE 0.039
- Lipstick Red #C0022F ΔE 0.043
Use #AD2D36 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.