#AC3A27
Closest named color: Rusty Red (#AF2F0D). oklch(51% 0.153 31.9), rgb(172, 58, 39).
Aa
White text reads best on this color (6.19:1).
About this color
#AC3A27 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.153 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.020 away. White text reads best on it, at 6.19:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.38:1 |
| White text | 6.19:1 |
Values
| HEX | #AC3A27 |
| RGB | rgb(172, 58, 39) |
| HSL | hsl(9, 63%, 41%) |
| OKLCH | oklch(51% 0.153 31.9) |
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 #AC3A27 | 6.19:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #AC3A27 | 3.38:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #AC3A27 text on white | 6.19:1 | AA | Lc 79.9 | Fine for body text |
| #AC3A27 text on black | 3.38:1 | AA large text | Lc -21.9 | 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
#ECB0A3
oklch(80.9% 0.073 32.5)
-
Step 400
400
#E08371
oklch(70.6% 0.118 31.9)
-
Step 500
500
#D5614C
oklch(63.1% 0.151 32)
-
Step 600
600
#C0432E
oklch(55.5% 0.164 32)
-
Step 700
700 (this color)
#AC3A27
oklch(51% 0.153 31.9)
-
Step 800
800
#862C1D
oklch(42.6% 0.126 31.9)
-
Step 900
900
#6C291E
oklch(37.6% 0.098 31.5)
-
Step 950
950
#401912
oklch(27% 0.063 31.8)
#AC3A27 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) | #5A5124 | 0.159 |
| Deuteranopia (no green cones) | #776A23 | 0.144 |
| Tritanopia (no blue cones) | #BD1A36 | 0.055 |
| Achromatopsia (no color) | #616161 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC3A27
#AC3A27
oklch(51% 0.153 31.9)
- #007383
#007383
oklch(51% 0.089 211.5)
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 #AC3A27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.020
- Brick #A03623 ΔE 0.027
- Russet #A13905 ΔE 0.032
- Rust Red #AA2704 ΔE 0.033
- Firebrick #B22222 ΔE 0.033
- Brown #A52A2A ΔE 0.035
- Rufous #AE2012 ΔE 0.036
- Sinopia #BB3E03 ΔE 0.039
Use #AC3A27 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.