#AD2D1F
Closest named color: Rusty Red (#AF2F0D). oklch(49.7% 0.167 30.2), rgb(173, 45, 31).
Aa
White text reads best on this color (6.62:1).
About this color
#AD2D1F is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.167 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.014 away. White text reads best on it, at 6.62:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.167) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.17:1 |
| White text | 6.62:1 |
Values
| HEX | #AD2D1F |
| RGB | rgb(173, 45, 31) |
| HSL | hsl(6, 70%, 40%) |
| OKLCH | oklch(49.7% 0.167 30.2) |
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 #AD2D1F | 6.62:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #AD2D1F | 3.17:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #AD2D1F text on white | 6.62:1 | AA | Lc 81.4 | Fine for body text |
| #AD2D1F 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E1
oklch(93.7% 0.023 31.1)
-
Step 200
200
#F5CFC8
oklch(88.5% 0.044 30.2)
-
Step 300
300
#F0AEA2
oklch(81% 0.08 30.5)
-
Step 400
400
#E6806F
oklch(70.8% 0.129 30.6)
-
Step 500
500
#DB5A49
oklch(63% 0.165 29.9)
-
Step 600
600
#C63B2A
oklch(55.6% 0.179 30.4)
-
Step 700
700 (this color)
#AD2D1F
oklch(49.7% 0.167 30.2)
-
Step 800
800
#8B261A
oklch(42.7% 0.138 30.3)
-
Step 900
900
#70251C
oklch(37.7% 0.108 29.8)
-
Step 950
950
#421711
oklch(27% 0.068 30.2)
#AD2D1F 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) | #544B1C | 0.177 |
| Deuteranopia (no green cones) | #736719 | 0.162 |
| Tritanopia (no blue cones) | #BF002B | 0.048 |
| Achromatopsia (no color) | #5D5D5D | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD2D1F
#AD2D1F
oklch(49.7% 0.167 30.2)
- #006F7D
#006F7D
oklch(49.6% 0.086 209.9)
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 #AD2D1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.014
- Rufous #AE2012 ΔE 0.016
- Firebrick #B22222 ΔE 0.016
- Rust Red #AA2704 ΔE 0.017
- Brown #A52A2A ΔE 0.022
- Brick #A03623 ΔE 0.026
- Russet #A13905 ΔE 0.036
- Burnt Red #9F2305 ΔE 0.038
Use #AD2D1F 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.