#AC4143
Closest named color: Dull Red (#BB3F3F). oklch(52.3% 0.141 22.2), rgb(172, 65, 67).
Aa
White text reads best on this color (5.84:1).
About this color
#AC4143 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.141 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.029 away. White text reads best on it, at 5.84:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.141) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #AC4143 |
| RGB | rgb(172, 65, 67) |
| HSL | hsl(359, 45%, 46%) |
| OKLCH | oklch(52.3% 0.141 22.2) |
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 #AC4143 | 5.84:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #AC4143 | 3.59:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #AC4143 text on white | 5.84:1 | AA | Lc 78.5 | Fine for body text |
| #AC4143 text on black | 3.59:1 | AA large text | Lc -23.3 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E4
oklch(93.6% 0.02 21.4)
-
Step 200
200
#F1D0CE
oklch(88.5% 0.037 22)
-
Step 300
300
#EAB0AD
oklch(81% 0.068 22.1)
-
Step 400
400
#DC8481
oklch(70.6% 0.109 22.3)
-
Step 500
500
#D06362
oklch(63.1% 0.139 22.4)
-
Step 600
600
#BB4749
oklch(55.6% 0.15 22.4)
-
Step 700
700 (this color)
#AC4143
oklch(52.3% 0.141 22.2)
-
Step 800
800
#832F30
oklch(42.8% 0.116 22.7)
-
Step 900
900
#6A2B2B
oklch(37.8% 0.091 22.4)
-
Step 950
950
#3E1A19
oklch(27% 0.057 23.2)
#AC4143 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) | #5C5742 | 0.151 |
| Deuteranopia (no green cones) | #776D40 | 0.139 |
| Tritanopia (no blue cones) | #BC2C43 | 0.041 |
| Achromatopsia (no color) | #656565 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC4143
#AC4143
oklch(52.3% 0.141 22.2)
- #007980
#007980
oklch(52.4% 0.089 201.9)
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 #AC4143, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.029
- Light Maroon #A24857 ΔE 0.031
- Dusty Red #B9484E ΔE 0.033
- Light Burgundy #A8415B ΔE 0.036
- Dark Rose #B5485D ΔE 0.040
- Brick #A03623 ΔE 0.046
- Brown #A52A2A ΔE 0.047
- Firebrick #B22222 ΔE 0.049
Use #AC4143 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.