#AA5639
Closest named color: Sienna (#A0522D). oklch(54.9% 0.118 39.5), rgb(170, 86, 57).
Aa
White text reads best on this color (5.12:1).
About this color
#AA5639 is a medium-dark, moderately saturated red. In OKLCH its lightness is 55%, its chroma 0.118 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.025 away. White text reads best on it, at 5.12:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.09:1 |
| White text | 5.12:1 |
Values
| HEX | #AA5639 |
| RGB | rgb(170, 86, 57) |
| HSL | hsl(15, 50%, 45%) |
| OKLCH | oklch(54.9% 0.118 39.5) |
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 #AA5639 | 5.12:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #AA5639 | 4.09:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #AA5639 text on white | 5.12:1 | AA | Lc 74.9 | Content text, not long reading |
| #AA5639 text on black | 4.09:1 | AA large text | Lc -26.8 | 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
#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
#CF8E79
oklch(70.6% 0.085 38.7)
-
Step 500
500
#C17156
oklch(63.1% 0.109 39.3)
-
Step 600
600 (this color)
#AA5639
oklch(54.9% 0.118 39.5)
-
Step 700
700
#94482D
oklch(49.2% 0.11 39.8)
-
Step 800
800
#783B26
oklch(42.7% 0.091 39.4)
-
Step 900
900
#613324
oklch(37.6% 0.071 38.8)
-
Step 950
950
#391E15
oklch(26.9% 0.045 39.2)
#AA5639 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) | #6C6236 | 0.113 |
| Deuteranopia (no green cones) | #817538 | 0.104 |
| Tritanopia (no blue cones) | #BA464F | 0.057 |
| Achromatopsia (no color) | #6E6E6E | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA5639
#AA5639
oklch(54.9% 0.118 39.5)
- #007E99
#007E99
oklch(54.8% 0.1 219.8)
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 #AA5639, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.025
- Cinnamon #AC4F06 ΔE 0.034
- Earth #A2653E ΔE 0.037
- Burnt Siena #B75203 ΔE 0.039
- Sepia #985E2B ΔE 0.043
- Raw Umber #A75E09 ΔE 0.046
- Copper #B66325 ΔE 0.048
- Burnt Orange #C04E01 ΔE 0.049
Use #AA5639 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.