#511819
Closest named color: Burgundy (#610023). oklch(30.2% 0.085 22.8), rgb(81, 24, 25).
Aa
White text reads best on this color (14.05:1).
About this color
#511819 is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.085 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.049 away. White text reads best on it, at 14.05:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.49:1 |
| White text | 14.05:1 |
Values
| HEX | #511819 |
| RGB | rgb(81, 24, 25) |
| HSL | hsl(359, 54%, 21%) |
| OKLCH | oklch(30.2% 0.085 22.8) |
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 #511819 | 14.05:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #511819 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #511819 text on white | 14.05:1 | AAA | Lc 100.1 | Preferred for body text |
| #511819 text on black | 1.49:1 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FDE3E1
oklch(93.6% 0.029 23)
-
Step 200
200
#FCCBC8
oklch(88.4% 0.056 22.4)
-
Step 300
300
#FBA7A2
oklch(80.9% 0.1 23.3)
-
Step 400
400
#F57270
oklch(70.8% 0.162 23)
-
Step 500
500
#EC414A
oklch(63% 0.207 22.8)
-
Step 600
600
#D8002D
oklch(55.7% 0.225 22.8)
-
Step 700
700
#B70024
oklch(49.2% 0.198 23)
-
Step 800
800
#97001C
oklch(42.7% 0.172 22.9)
-
Step 900
900
#79141D
oklch(37.6% 0.134 22.6)
-
Step 950
950 (this color)
#511819
oklch(30.2% 0.085 22.8)
#511819 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) | #272419 | 0.092 |
| Deuteranopia (no green cones) | #353017 | 0.085 |
| Tritanopia (no blue cones) | #590B19 | 0.025 |
| Achromatopsia (no color) | #2C2C2C | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511819
#511819
oklch(30.2% 0.085 22.8)
- #00363A
#00363A
oklch(30.3% 0.052 202.8)
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 #511819, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.049
- Mahogany #4A0100 ΔE 0.049
- Chocolate Brown #411900 ΔE 0.050
- Claret #680018 ΔE 0.053
- Deep Brown #410200 ΔE 0.065
- Reddy Brown #6E1005 ΔE 0.065
- Dark Brown #341C02 ΔE 0.075
- Dark Maroon #3C0008 ΔE 0.077
Use #511819 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.