#AC212D
Closest named color: Brown (#A52A2A). oklch(48.6% 0.174 22.7), rgb(172, 33, 45).
Aa
White text reads best on this color (6.97:1).
About this color
#AC212D is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.174 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.017 away. White text reads best on it, at 6.97:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.00:1 |
| White text | 6.97:1 |
Values
| HEX | #AC212D |
| RGB | rgb(172, 33, 45) |
| HSL | hsl(355, 68%, 40%) |
| OKLCH | oklch(48.6% 0.174 22.7) |
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 #AC212D | 6.97:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #AC212D | 3.00:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #AC212D text on white | 6.97:1 | AA | Lc 82.6 | Fine for body text |
| #AC212D text on black | 3.00:1 | AA large text | Lc -19.3 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F7CECB
oklch(88.6% 0.047 23)
-
Step 300
300
#F2ACA8
oklch(81% 0.083 22.7)
-
Step 400
400
#E87C79
oklch(70.7% 0.134 22.7)
-
Step 500
500
#DE5557
oklch(63.1% 0.172 22.6)
-
Step 600
600
#C9333C
oklch(55.5% 0.186 22.8)
-
Step 700
700 (this color)
#AC212D
oklch(48.6% 0.174 22.7)
-
Step 800
800
#8D2027
oklch(42.7% 0.144 22.7)
-
Step 900
900
#712224
oklch(37.6% 0.111 22.8)
-
Step 950
950
#431516
oklch(27% 0.071 21.9)
#AC212D 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) | #4D462C | 0.190 |
| Deuteranopia (no green cones) | #6F6428 | 0.174 |
| Tritanopia (no blue cones) | #BE0027 | 0.036 |
| Achromatopsia (no color) | #595959 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC212D
#AC212D
oklch(48.6% 0.174 22.7)
- #006D74
#006D74
oklch(48.7% 0.083 202.6)
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 #AC212D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.017
- Firebrick #B22222 ΔE 0.018
- Rufous #AE2012 ΔE 0.024
- Rouge #AB1239 ΔE 0.025
- Rust Red #AA2704 ΔE 0.034
- Auburn #9B2226 ΔE 0.036
- Scarlet #BE0119 ΔE 0.038
- Rusty Red #AF2F0D ΔE 0.038
Use #AC212D 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.