#AC553B
Closest named color: Sienna (#A0522D). oklch(55.1% 0.121 37.4), rgb(172, 85, 59).
Aa
White text reads best on this color (5.10:1).
About this color
#AC553B is a medium-dark, moderately saturated red. In OKLCH its lightness is 55%, its chroma 0.121 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.029 away. White text reads best on it, at 5.10:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.121) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.11:1 |
| White text | 5.10:1 |
Values
| HEX | #AC553B |
| RGB | rgb(172, 85, 59) |
| HSL | hsl(14, 49%, 45%) |
| OKLCH | oklch(55.1% 0.121 37.4) |
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 #AC553B | 5.10:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #AC553B | 4.11:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #AC553B text on white | 5.10:1 | AA | Lc 74.7 | Content text, not long reading |
| #AC553B text on black | 4.11:1 | AA large text | Lc -27.0 | 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
#F4E7E2
oklch(93.7% 0.016 42.4)
-
Step 200
200
#ECD3CB
oklch(88.5% 0.03 38.6)
-
Step 300
300
#E1B5A8
oklch(80.9% 0.055 37.1)
-
Step 400
400
#D08E7A
oklch(70.8% 0.086 37.6)
-
Step 500
500
#C27057
oklch(63.1% 0.111 37.7)
-
Step 600
600 (this color)
#AC553B
oklch(55.1% 0.121 37.4)
-
Step 700
700
#95462F
oklch(49.1% 0.112 37)
-
Step 800
800
#793A27
oklch(42.6% 0.093 37.5)
-
Step 900
900
#623324
oklch(37.8% 0.072 38.4)
-
Step 950
950
#3A1E16
oklch(27.1% 0.046 36.8)
#AC553B 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) | #6C6238 | 0.117 |
| Deuteranopia (no green cones) | #817539 | 0.108 |
| Tritanopia (no blue cones) | #BC454F | 0.055 |
| Achromatopsia (no color) | #6E6E6E | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC553B
#AC553B
oklch(55.1% 0.121 37.4)
- #007F97
#007F97
oklch(55% 0.098 217.2)
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 #AC553B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.029
- Cinnamon #AC4F06 ΔE 0.036
- Burnt Siena #B75203 ΔE 0.040
- Earth #A2653E ΔE 0.040
- Dusty Red #B9484E ΔE 0.048
- Burnt Orange #C04E01 ΔE 0.048
- Brick Orange #C14A09 ΔE 0.048
- Sepia #985E2B ΔE 0.049
Use #AC553B 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.