#511B05
Closest named color: Chocolate Brown (#411900). oklch(30.3% 0.087 40.4), rgb(81, 27, 5).
Aa
White text reads best on this color (13.91:1).
About this color
#511B05 is a dark, moderately saturated brown. In OKLCH its lightness is 30%, its chroma 0.087 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.039 away. White text reads best on it, at 13.91:1.
| Hue family | Browns |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.087) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.50:1 |
| White text | 13.91:1 |
Values
| HEX | #511B05 |
| RGB | rgb(81, 27, 5) |
| HSL | hsl(17, 88%, 17%) |
| OKLCH | oklch(30.3% 0.087 40.4) |
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 #511B05 | 13.91:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #511B05 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #511B05 text on white | 13.91:1 | AAA | Lc 100.0 | Preferred for body text |
| #511B05 text on black | 1.50:1 | Fails | Lc 0.0 | Not readable |
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 950.
-
Step 50
50
#FEF3EF
oklch(97.2% 0.013 41.2)
-
Step 100
100
#FDE4DB
oklch(93.7% 0.03 40.9)
-
Step 200
200
#FCCDBD
oklch(88.5% 0.058 39.7)
-
Step 300
300
#FAAA8D
oklch(80.9% 0.103 40.7)
-
Step 400
400
#F47749
oklch(70.7% 0.165 40.2)
-
Step 500
500
#E65100
oklch(63.1% 0.197 40.3)
-
Step 600
600
#C24300
oklch(55.5% 0.173 40.3)
-
Step 700
700
#A43800
oklch(49.1% 0.153 40.5)
-
Step 800
800
#882D00
oklch(42.8% 0.133 40.5)
-
Step 900
900
#722400
oklch(37.7% 0.117 40.3)
-
Step 950
950 (this color)
#511B05
oklch(30.3% 0.087 40.4)
#511B05 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) | #2B2502 | 0.085 |
| Deuteranopia (no green cones) | #383103 | 0.078 |
| Tritanopia (no blue cones) | #5A0D17 | 0.040 |
| Achromatopsia (no color) | #2C2C2C | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511B05
#511B05
oklch(30.3% 0.087 40.4)
- #003542
#003542
oklch(30.4% 0.055 219.9)
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 #511B05, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.039
- Mahogany #4A0100 ΔE 0.052
- Reddy Brown #6E1005 ΔE 0.064
- Claret #680018 ΔE 0.065
- Dark Brown #341C02 ΔE 0.066
- Deep Brown #410200 ΔE 0.067
- Burgundy #610023 ΔE 0.069
- Blood #770001 ΔE 0.084
Use #511B05 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.