#AC5745
Closest named color: Sienna (#A0522D). oklch(55.6% 0.115 33.2), rgb(172, 87, 69).
Aa
White text reads best on this color (4.99:1).
About this color
#AC5745 is a medium-dark, moderately saturated red. In OKLCH its lightness is 56%, its chroma 0.115 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.037 away. White text reads best on it, at 4.99:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.115) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.20:1 |
| White text | 4.99:1 |
Values
| HEX | #AC5745 |
| RGB | rgb(172, 87, 69) |
| HSL | hsl(10, 43%, 47%) |
| OKLCH | oklch(55.6% 0.115 33.2) |
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 #AC5745 | 4.99:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #AC5745 | 4.20:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #AC5745 text on white | 4.99:1 | AA | Lc 74.1 | Content text, not long reading |
| #AC5745 text on black | 4.20:1 | AA large text | Lc -27.6 | 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 600.
-
Step 50
50
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F4E6E3
oklch(93.5% 0.016 32)
-
Step 200
200
#ECD3CD
oklch(88.6% 0.029 33.7)
-
Step 300
300
#E0B5AB
oklch(80.9% 0.052 33.3)
-
Step 400
400
#CF8E7F
oklch(70.8% 0.083 33.5)
-
Step 500
500
#C1705F
oklch(63.1% 0.107 32.8)
-
Step 600
600 (this color)
#AC5745
oklch(55.6% 0.115 33.2)
-
Step 700
700
#944737
oklch(49.2% 0.108 33.1)
-
Step 800
800
#783B2E
oklch(42.8% 0.088 33.3)
-
Step 900
900
#613329
oklch(37.8% 0.069 33.3)
-
Step 950
950
#391E18
oklch(27% 0.044 33.4)
#AC5745 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) | #6C6443 | 0.116 |
| Deuteranopia (no green cones) | #817643 | 0.106 |
| Tritanopia (no blue cones) | #BC4853 | 0.049 |
| Achromatopsia (no color) | #6F6F6F | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC5745
#AC5745
oklch(55.6% 0.115 33.2)
- #008195
#008195
oklch(55.4% 0.097 213.5)
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 #AC5745, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.037
- Earth #A2653E ΔE 0.041
- Dusty Red #B9484E ΔE 0.043
- Cinnamon #AC4F06 ΔE 0.048
- Burnt Siena #B75203 ΔE 0.049
- Clay #B66A50 ΔE 0.050
- Dull Red #BB3F3F ΔE 0.051
- Copper #B66325 ΔE 0.054
Use #AC5745 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.