#AD372D
Closest named color: Rusty Red (#AF2F0D). oklch(50.9% 0.156 28.6), rgb(173, 55, 45).
Aa
White text reads best on this color (6.24:1).
About this color
#AD372D is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.156 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.023 away. White text reads best on it, at 6.24:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.36:1 |
| White text | 6.24:1 |
Values
| HEX | #AD372D |
| RGB | rgb(173, 55, 45) |
| HSL | hsl(5, 59%, 43%) |
| OKLCH | oklch(50.9% 0.156 28.6) |
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 #AD372D | 6.24:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #AD372D | 3.36:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #AD372D text on white | 6.24:1 | AA | Lc 80.1 | Fine for body text |
| #AD372D text on black | 3.36:1 | AA large text | Lc -21.7 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E2
oklch(93.6% 0.021 28.3)
-
Step 200
200
#F4CFCA
oklch(88.5% 0.042 27)
-
Step 300
300
#EDAFA5
oklch(80.9% 0.075 29.1)
-
Step 400
400
#E28275
oklch(70.7% 0.121 28.6)
-
Step 500
500
#D65F51
oklch(63.1% 0.153 28.9)
-
Step 600
600
#C24135
oklch(55.7% 0.167 28.8)
-
Step 700
700 (this color)
#AD372D
oklch(50.9% 0.156 28.6)
-
Step 800
800
#882A22
oklch(42.7% 0.13 28.6)
-
Step 900
900
#6D2821
oklch(37.7% 0.1 28.5)
-
Step 950
950
#401814
oklch(26.9% 0.063 27.8)
#AD372D 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) | #58502B | 0.165 |
| Deuteranopia (no green cones) | #766A29 | 0.151 |
| Tritanopia (no blue cones) | #BE1336 | 0.051 |
| Achromatopsia (no color) | #606060 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD372D
#AD372D
oklch(50.9% 0.156 28.6)
- #007380
#007380
oklch(50.8% 0.087 208.5)
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 #AD372D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.023
- Firebrick #B22222 ΔE 0.027
- Brick #A03623 ΔE 0.029
- Brown #A52A2A ΔE 0.030
- Rufous #AE2012 ΔE 0.033
- Rust Red #AA2704 ΔE 0.033
- Dull Red #BB3F3F ΔE 0.038
- Russet #A13905 ΔE 0.039
Use #AD372D 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.