#AC2E39
Closest named color: Brown (#A52A2A). oklch(49.9% 0.162 20.7), rgb(172, 46, 57).
Aa
White text reads best on this color (6.55:1).
About this color
#AC2E39 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.162 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.023 away. White text reads best on it, at 6.55:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.162) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #AC2E39 |
| RGB | rgb(172, 46, 57) |
| HSL | hsl(355, 58%, 43%) |
| OKLCH | oklch(49.9% 0.162 20.7) |
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 #AC2E39 | 6.55:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #AC2E39 | 3.20:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #AC2E39 text on white | 6.55:1 | AA | Lc 81.3 | Fine for body text |
| #AC2E39 text on black | 3.20:1 | AA large text | Lc -20.6 | 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
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F5CECD
oklch(88.4% 0.044 19.8)
-
Step 300
300
#EFADAB
oklch(80.9% 0.078 20.9)
-
Step 400
400
#E47F7F
oklch(70.7% 0.125 20.7)
-
Step 500
500
#D95A5F
oklch(63.1% 0.16 20.5)
-
Step 600
600
#C43A45
oklch(55.5% 0.174 20.6)
-
Step 700
700 (this color)
#AC2E39
oklch(49.9% 0.162 20.7)
-
Step 800
800
#89262E
oklch(42.7% 0.133 20.5)
-
Step 900
900
#6F2529
oklch(37.8% 0.105 20.5)
-
Step 950
950
#411718
oklch(27% 0.066 21.1)
#AC2E39 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) | #514C38 | 0.178 |
| Deuteranopia (no green cones) | #716735 | 0.162 |
| Tritanopia (no blue cones) | #BD0033 | 0.042 |
| Achromatopsia (no color) | #5D5D5D | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC2E39
#AC2E39
oklch(49.9% 0.162 20.7)
- #007177
#007177
oklch(49.9% 0.085 201.3)
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 #AC2E39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.023
- Firebrick #B22222 ΔE 0.026
- Rouge #AB1239 ΔE 0.033
- Rufous #AE2012 ΔE 0.035
- Brick #A03623 ΔE 0.039
- Rusty Red #AF2F0D ΔE 0.040
- Rust Red #AA2704 ΔE 0.042
- Lipstick Red #C0022F ΔE 0.045
Use #AC2E39 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.