#AD581B
Closest named color: Cinnamon (#AC4F06). oklch(55.4% 0.131 51.1), rgb(173, 88, 27).
Aa
White text reads best on this color (5.01:1).
About this color
#AD581B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.131 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Cinnamon (#AC4F06), ΔE 0.020 away. White text reads best on it, at 5.01:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.131) |
| Temperature | warm |
| Nearest name | Cinnamon (#AC4F06) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #AD581B |
| RGB | rgb(173, 88, 27) |
| HSL | hsl(25, 73%, 39%) |
| OKLCH | oklch(55.4% 0.131 51.1) |
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 #AD581B | 5.01:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #AD581B | 4.18:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #AD581B text on white | 5.01:1 | AA | Lc 74.2 | Content text, not long reading |
| #AD581B text on black | 4.18:1 | AA large text | Lc -27.5 | 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
#ECD4C6
oklch(88.6% 0.033 52.3)
-
Step 300
300
#E1B69F
oklch(80.9% 0.059 49.6)
-
Step 400
400
#D08F6A
oklch(70.6% 0.094 50.3)
-
Step 500
500
#C27240
oklch(63% 0.12 51)
-
Step 600
600 (this color)
#AD581B
oklch(55.4% 0.131 51.1)
-
Step 700
700
#95480D
oklch(49.1% 0.122 50.9)
-
Step 800
800
#793C10
oklch(42.7% 0.101 51.3)
-
Step 900
900
#623416
oklch(37.8% 0.079 51.2)
-
Step 950
950
#391F0E
oklch(27% 0.049 52.4)
#AD581B 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) | #716310 | 0.112 |
| Deuteranopia (no green cones) | #857719 | 0.103 |
| Tritanopia (no blue cones) | #BE454C | 0.080 |
| Achromatopsia (no color) | #6F6F6F | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD581B
#AD581B
oklch(55.4% 0.131 51.1)
- #007DA8
#007DA8
oklch(55.3% 0.112 231.4)
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 #AD581B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cinnamon #AC4F06 ΔE 0.020
- Burnt Siena #B75203 ΔE 0.021
- Raw Umber #A75E09 ΔE 0.021
- Orangey Brown #B16002 ΔE 0.026
- Copper #B66325 ΔE 0.032
- Sienna #A0522D ΔE 0.034
- Umber #B26400 ΔE 0.035
- Burnt Orange #C04E01 ΔE 0.037
Use #AD581B 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.