#AC3A38
Closest named color: Brown (#A52A2A). oklch(51.2% 0.15 25), rgb(172, 58, 56).
Aa
White text reads best on this color (6.14:1).
About this color
#AC3A38 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.150 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.033 away. White text reads best on it, at 6.14:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.41:1 |
| White text | 6.14:1 |
Values
| HEX | #AC3A38 |
| RGB | rgb(172, 58, 56) |
| HSL | hsl(1, 51%, 45%) |
| OKLCH | oklch(51.2% 0.15 25) |
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 #AC3A38 | 6.14:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #AC3A38 | 3.41:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #AC3A38 text on white | 6.14:1 | AA | Lc 79.7 | Fine for body text |
| #AC3A38 text on black | 3.41:1 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F3D0CC
oklch(88.6% 0.04 25.6)
-
Step 300
300
#ECAFA9
oklch(80.9% 0.072 25.2)
-
Step 400
400
#E0837C
oklch(70.8% 0.116 25)
-
Step 500
500
#D4605A
oklch(63.1% 0.148 25.2)
-
Step 600
600
#BF4340
oklch(55.6% 0.16 25.2)
-
Step 700
700 (this color)
#AC3A38
oklch(51.2% 0.15 25)
-
Step 800
800
#862C2A
oklch(42.8% 0.124 25.1)
-
Step 900
900
#6C2926
oklch(37.8% 0.097 25.3)
-
Step 950
950
#3F1917
oklch(27% 0.06 24.9)
#AC3A38 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) | #595237 | 0.160 |
| Deuteranopia (no green cones) | #756B35 | 0.148 |
| Tritanopia (no blue cones) | #BD1E3B | 0.046 |
| Achromatopsia (no color) | #616161 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC3A38
#AC3A38
oklch(51.2% 0.15 25)
- #00757E
#00757E
oklch(51.3% 0.087 204.2)
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 #AC3A38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.033
- Dull Red #BB3F3F ΔE 0.034
- Firebrick #B22222 ΔE 0.034
- Brick #A03623 ΔE 0.034
- Rusty Red #AF2F0D ΔE 0.035
- Rufous #AE2012 ΔE 0.042
- Rust Red #AA2704 ΔE 0.044
- Light Maroon #A24857 ΔE 0.044
Use #AC3A38 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.