#AC4538
Closest named color: Dull Red (#BB3F3F). oklch(52.6% 0.138 29.7), rgb(172, 69, 56).
Aa
White text reads best on this color (5.73:1).
About this color
#AC4538 is a medium-dark, moderately saturated red. In OKLCH its lightness is 53%, its chroma 0.138 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.032 away. White text reads best on it, at 5.73:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.66:1 |
| White text | 5.73:1 |
Values
| HEX | #AC4538 |
| RGB | rgb(172, 69, 56) |
| HSL | hsl(7, 51%, 45%) |
| OKLCH | oklch(52.6% 0.138 29.7) |
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 #AC4538 | 5.73:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #AC4538 | 3.66:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #AC4538 text on white | 5.73:1 | AA | Lc 78.0 | Fine for body text |
| #AC4538 text on black | 3.66:1 | AA large text | Lc -23.8 | 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 600.
-
Step 50
50
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E3
oklch(93.7% 0.018 30.3)
-
Step 200
200
#EFD1CC
oklch(88.4% 0.034 29)
-
Step 300
300
#E6B2A9
oklch(80.8% 0.062 29.7)
-
Step 400
400
#D7897C
oklch(70.7% 0.098 30)
-
Step 500
500
#CB695B
oklch(63.2% 0.127 29.5)
-
Step 600
600 (this color)
#AC4538
oklch(52.6% 0.138 29.7)
-
Step 700
700
#9C3E32
oklch(49% 0.128 29.7)
-
Step 800
800
#7F342A
oklch(42.7% 0.106 29.8)
-
Step 900
900
#662E26
oklch(37.6% 0.083 29.8)
-
Step 950
950
#3C1C17
oklch(27% 0.051 30.1)
#AC4538 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) | #605836 | 0.144 |
| Deuteranopia (no green cones) | #7A6F35 | 0.133 |
| Tritanopia (no blue cones) | #BD2F42 | 0.050 |
| Achromatopsia (no color) | #666666 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC4538
#AC4538
oklch(52.6% 0.138 29.7)
- #007987
#007987
oklch(52.7% 0.091 208.9)
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 #AC4538, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.032
- Dusty Red #B9484E ΔE 0.038
- Sienna #A0522D ΔE 0.040
- Rusty Red #AF2F0D ΔE 0.043
- Sinopia #BB3E03 ΔE 0.043
- Brick #A03623 ΔE 0.043
- Light Maroon #A24857 ΔE 0.044
- Burnt Umber #A0450E ΔE 0.045
Use #AC4538 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.