#AA5738
Closest named color: Sienna (#A0522D). oklch(55.1% 0.118 40.7), rgb(170, 87, 56).
Aa
White text reads best on this color (5.08:1).
About this color
#AA5738 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.118 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.026 away. White text reads best on it, at 5.08:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.12:1 |
| White text | 5.08:1 |
Values
| HEX | #AA5738 |
| RGB | rgb(170, 87, 56) |
| HSL | hsl(16, 50%, 44%) |
| OKLCH | oklch(55.1% 0.118 40.7) |
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 #AA5738 | 5.08:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #AA5738 | 4.12:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #AA5738 text on white | 5.08:1 | AA | Lc 74.7 | Content text, not long reading |
| #AA5738 text on black | 4.12:1 | 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
#EBD3CB
oklch(88.4% 0.029 39.3)
-
Step 300
300
#E0B6A7
oklch(81% 0.053 40.6)
-
Step 400
400
#CF8F78
oklch(70.8% 0.085 40.6)
-
Step 500
500
#C07255
oklch(63.1% 0.107 41)
-
Step 600
600 (this color)
#AA5738
oklch(55.1% 0.118 40.7)
-
Step 700
700
#93482C
oklch(49% 0.109 40.6)
-
Step 800
800
#783C25
oklch(42.8% 0.091 41.1)
-
Step 900
900
#613423
oklch(37.8% 0.071 41.2)
-
Step 950
950
#391F15
oklch(27.1% 0.044 41.6)
#AA5738 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) | #6D6335 | 0.112 |
| Deuteranopia (no green cones) | #817537 | 0.102 |
| Tritanopia (no blue cones) | #BA4750 | 0.059 |
| Achromatopsia (no color) | #6E6E6E | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA5738
#AA5738
oklch(55.1% 0.118 40.7)
- #007F9B
#007F9B
oklch(55.2% 0.101 220.5)
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 #AA5738, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.026
- Cinnamon #AC4F06 ΔE 0.033
- Earth #A2653E ΔE 0.034
- Burnt Siena #B75203 ΔE 0.038
- Sepia #985E2B ΔE 0.042
- Raw Umber #A75E09 ΔE 0.043
- Copper #B66325 ΔE 0.046
- Orangey Brown #B16002 ΔE 0.048
Use #AA5738 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.