#511506
Closest named color: Chocolate Brown (#411900). oklch(29.5% 0.093 35), rgb(81, 21, 6).
Aa
White text reads best on this color (14.38:1).
About this color
#511506 is a dark, moderately saturated red. In OKLCH its lightness is 29%, its chroma 0.093 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.038 away. White text reads best on it, at 14.38:1.
| Hue family | Reds |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.093) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.45:1 |
| White text | 14.38:1 |
Values
| HEX | #511506 |
| RGB | rgb(81, 21, 6) |
| HSL | hsl(12, 86%, 17%) |
| OKLCH | oklch(29.5% 0.093 35) |
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 #511506 | 14.38:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #511506 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #511506 text on white | 14.38:1 | AAA | Lc 100.4 | Preferred for body text |
| #511506 text on black | 1.45:1 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FEE3DC
oklch(93.6% 0.031 34.9)
-
Step 200
200
#FFCCBE
oklch(88.6% 0.061 35.9)
-
Step 300
300
#FFA790
oklch(81% 0.11 35.3)
-
Step 400
400
#FA704F
oklch(70.7% 0.176 34.7)
-
Step 500
500
#F13F00
oklch(63.1% 0.221 35.1)
-
Step 600
600
#CC3400
oklch(55.7% 0.195 35.1)
-
Step 700
700
#AC2A00
oklch(49% 0.172 35)
-
Step 800
800
#8F2100
oklch(42.8% 0.15 35)
-
Step 900
900
#781A00
oklch(37.7% 0.132 34.9)
-
Step 950
950 (this color)
#511506
oklch(29.5% 0.093 35)
#511506 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) | #272104 | 0.095 |
| Deuteranopia (no green cones) | #362F04 | 0.086 |
| Tritanopia (no blue cones) | #5A0312 | 0.035 |
| Achromatopsia (no color) | #2A2A2A | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511506
#511506
oklch(29.5% 0.093 35)
- #00333D
#00333D
oklch(29.6% 0.052 215.2)
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 #511506, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.038
- Mahogany #4A0100 ΔE 0.040
- Deep Brown #410200 ΔE 0.057
- Claret #680018 ΔE 0.060
- Burgundy #610023 ΔE 0.061
- Reddy Brown #6E1005 ΔE 0.065
- Dark Brown #341C02 ΔE 0.067
- Dark Maroon #3C0008 ΔE 0.073
Use #511506 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.