#AD5539
Closest named color: Sienna (#A0522D). oklch(55.2% 0.123 38.3), rgb(173, 85, 57).
Aa
White text reads best on this color (5.07:1).
About this color
#AD5539 is a medium-dark, moderately saturated red. In OKLCH its lightness is 55%, its chroma 0.123 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.030 away. White text reads best on it, at 5.07:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.123) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #AD5539 |
| RGB | rgb(173, 85, 57) |
| HSL | hsl(14, 50%, 45%) |
| OKLCH | oklch(55.2% 0.123 38.3) |
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 #AD5539 | 5.07:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #AD5539 | 4.13:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #AD5539 text on white | 5.07:1 | AA | Lc 74.6 | Content text, not long reading |
| #AD5539 text on black | 4.13:1 | AA large text | Lc -27.1 | 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
#F4E6E2
oklch(93.5% 0.016 36.5)
-
Step 200
200
#ECD3CB
oklch(88.5% 0.03 38.6)
-
Step 300
300
#E1B5A7
oklch(80.9% 0.055 38.4)
-
Step 400
400
#D18D78
oklch(70.7% 0.089 37.9)
-
Step 500
500
#C37055
oklch(63.1% 0.113 38.7)
-
Step 600
600 (this color)
#AD5539
oklch(55.2% 0.123 38.3)
-
Step 700
700
#96462C
oklch(49.2% 0.115 38.5)
-
Step 800
800
#793A26
oklch(42.6% 0.094 38.2)
-
Step 900
900
#623223
oklch(37.6% 0.074 38.1)
-
Step 950
950
#3A1E15
oklch(27.1% 0.047 38.6)
#AD5539 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 | 0.119 |
| Deuteranopia (no green cones) | #827637 | 0.110 |
| Tritanopia (no blue cones) | #BD444F | 0.058 |
| Achromatopsia (no color) | #6E6E6E | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD5539
#AD5539
oklch(55.2% 0.123 38.3)
- #007F99
#007F99
oklch(55.1% 0.1 218.8)
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 #AD5539, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.030
- Cinnamon #AC4F06 ΔE 0.035
- Burnt Siena #B75203 ΔE 0.037
- Earth #A2653E ΔE 0.040
- Burnt Orange #C04E01 ΔE 0.045
- Brick Orange #C14A09 ΔE 0.045
- Copper #B66325 ΔE 0.047
- Raw Umber #A75E09 ΔE 0.048
Use #AD5539 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.