#AC551F
Closest named color: Cinnamon (#AC4F06). oklch(54.8% 0.131 48.4), rgb(172, 85, 31).
Aa
White text reads best on this color (5.15:1).
About this color
#AC551F is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.131 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Cinnamon (#AC4F06), ΔE 0.015 away. White text reads best on it, at 5.15:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.131) |
| Temperature | warm |
| Nearest name | Cinnamon (#AC4F06) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #AC551F |
| RGB | rgb(172, 85, 31) |
| HSL | hsl(23, 69%, 40%) |
| OKLCH | oklch(54.8% 0.131 48.4) |
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 #AC551F | 5.15:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #AC551F | 4.07:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #AC551F text on white | 5.15:1 | AA | Lc 75.0 | Content text, not long reading |
| #AC551F text on black | 4.07:1 | AA large text | Lc -26.7 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E7E0
oklch(93.6% 0.017 50.4)
-
Step 200
200
#ECD3C7
oklch(88.4% 0.032 47.3)
-
Step 300
300
#E1B6A0
oklch(80.9% 0.059 48.5)
-
Step 400
400
#D18F6C
oklch(70.8% 0.094 48.7)
-
Step 500
500
#C37143
oklch(63% 0.12 48.7)
-
Step 600
600 (this color)
#AC551F
oklch(54.8% 0.131 48.4)
-
Step 700
700
#964714
oklch(49.1% 0.122 48.3)
-
Step 800
800
#7A3B14
oklch(42.7% 0.101 48.5)
-
Step 900
900
#623318
oklch(37.6% 0.078 48.6)
-
Step 950
950
#3A1E0F
oklch(27% 0.05 47.8)
#AC551F 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) | #6E6117 | 0.116 |
| Deuteranopia (no green cones) | #83751D | 0.106 |
| Tritanopia (no blue cones) | #BD424A | 0.075 |
| Achromatopsia (no color) | #6D6D6D | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC551F
#AC551F
oklch(54.8% 0.131 48.4)
- #007CA2
#007CA2
oklch(54.8% 0.107 228.4)
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 #AC551F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cinnamon #AC4F06 ΔE 0.015
- Burnt Siena #B75203 ΔE 0.022
- Sienna #A0522D ΔE 0.028
- Raw Umber #A75E09 ΔE 0.028
- Orangey Brown #B16002 ΔE 0.034
- Burnt Orange #C04E01 ΔE 0.038
- Sepia #985E2B ΔE 0.039
- Copper #B66325 ΔE 0.040
Use #AC551F 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.