#AD3F20
Closest named color: Rusty Red (#AF2F0D). oklch(51.7% 0.151 36.1), rgb(173, 63, 32).
Aa
White text reads best on this color (5.98:1).
About this color
#AD3F20 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.151 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.025 away. White text reads best on it, at 5.98:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.50:1 |
| White text | 5.98:1 |
Values
| HEX | #AD3F20 |
| RGB | rgb(173, 63, 32) |
| HSL | hsl(13, 69%, 40%) |
| OKLCH | oklch(51.7% 0.151 36.1) |
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 #AD3F20 | 5.98:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #AD3F20 | 3.50:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #AD3F20 text on white | 5.98:1 | AA | Lc 79.0 | Fine for body text |
| #AD3F20 text on black | 3.50:1 | AA large text | Lc -22.8 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F7E5E0
oklch(93.5% 0.021 36)
-
Step 200
200
#F2D0C7
oklch(88.4% 0.04 35.2)
-
Step 300
300
#EBB1A0
oklch(80.9% 0.072 37)
-
Step 400
400
#DF856D
oklch(70.7% 0.117 35.8)
-
Step 500
500
#D36345
oklch(63% 0.149 36)
-
Step 600
600
#BF4624
oklch(55.6% 0.163 36.1)
-
Step 700
700 (this color)
#AD3F20
oklch(51.7% 0.151 36.1)
-
Step 800
800
#852E16
oklch(42.6% 0.125 35.9)
-
Step 900
900
#6B2B19
oklch(37.7% 0.096 36.5)
-
Step 950
950
#3F1A10
oklch(27% 0.061 36.1)
#AD3F20 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) | #5E541B | 0.153 |
| Deuteranopia (no green cones) | #7A6C1B | 0.138 |
| Tritanopia (no blue cones) | #BF2239 | 0.062 |
| Achromatopsia (no color) | #636363 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD3F20
#AD3F20
oklch(51.7% 0.151 36.1)
- #00758A
#00758A
oklch(51.8% 0.092 216)
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 #AD3F20, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.025
- Sinopia #BB3E03 ΔE 0.030
- Burnt Umber #A0450E ΔE 0.031
- Russet #A13905 ΔE 0.032
- Brick #A03623 ΔE 0.035
- Rust Red #AA2704 ΔE 0.040
- Cinnamon #AC4F06 ΔE 0.040
- Sienna #A0522D ΔE 0.042
Use #AD3F20 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.