#AD3A25
Closest named color: Rusty Red (#AF2F0D). oklch(51.1% 0.154 32.6), rgb(173, 58, 37).
Aa
White text reads best on this color (6.16:1).
About this color
#AD3A25 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.154 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.019 away. White text reads best on it, at 6.16:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #AD3A25 |
| RGB | rgb(173, 58, 37) |
| HSL | hsl(9, 65%, 41%) |
| OKLCH | oklch(51.1% 0.154 32.6) |
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 #AD3A25 | 6.16:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #AD3A25 | 3.40:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #AD3A25 text on white | 6.16:1 | AA | Lc 79.8 | Fine for body text |
| #AD3A25 text on black | 3.40:1 | AA large text | Lc -22.1 | 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
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F3D0C8
oklch(88.5% 0.041 33)
-
Step 300
300
#EDB0A2
oklch(81% 0.075 33.3)
-
Step 400
400
#E18370
oklch(70.7% 0.12 32.3)
-
Step 500
500
#D5604A
oklch(63% 0.152 32.4)
-
Step 600
600
#C1432C
oklch(55.6% 0.166 32.5)
-
Step 700
700 (this color)
#AD3A25
oklch(51.1% 0.154 32.6)
-
Step 800
800
#872C1B
oklch(42.7% 0.128 32.7)
-
Step 900
900
#6D291C
oklch(37.8% 0.1 32.7)
-
Step 950
950
#401911
oklch(27% 0.063 33.1)
#AD3A25 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) | #5B5122 | 0.160 |
| Deuteranopia (no green cones) | #776B20 | 0.147 |
| Tritanopia (no blue cones) | #BF1836 | 0.057 |
| Achromatopsia (no color) | #616161 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD3A25
#AD3A25
oklch(51.1% 0.154 32.6)
- #007385
#007385
oklch(51.1% 0.09 213.4)
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 #AD3A25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.019
- Brick #A03623 ΔE 0.029
- Russet #A13905 ΔE 0.033
- Rust Red #AA2704 ΔE 0.033
- Firebrick #B22222 ΔE 0.034
- Rufous #AE2012 ΔE 0.036
- Sinopia #BB3E03 ΔE 0.036
- Brown #A52A2A ΔE 0.037
Use #AD3A25 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.