#511A1B
Closest named color: Burgundy (#610023). oklch(30.5% 0.083 22.3), rgb(81, 26, 27).
Aa
White text reads best on this color (13.87:1).
About this color
#511A1B is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.083 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.050 away. White text reads best on it, at 13.87:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.083) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.51:1 |
| White text | 13.87:1 |
Values
| HEX | #511A1B |
| RGB | rgb(81, 26, 27) |
| HSL | hsl(359, 51%, 21%) |
| OKLCH | oklch(30.5% 0.083 22.3) |
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 #511A1B | 13.87:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #511A1B | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #511A1B text on white | 13.87:1 | AAA | Lc 100.0 | Preferred for body text |
| #511A1B text on black | 1.51:1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FDE3E1
oklch(93.6% 0.029 23)
-
Step 200
200
#FBCCC9
oklch(88.5% 0.054 22.5)
-
Step 300
300
#FAA7A4
oklch(80.9% 0.099 21.8)
-
Step 400
400
#F27473
oklch(70.7% 0.156 22.3)
-
Step 500
500
#EA464E
oklch(63.2% 0.2 22.5)
-
Step 600
600
#D51231
oklch(55.6% 0.217 22.5)
-
Step 700
700
#B60026
oklch(49% 0.198 22.3)
-
Step 800
800
#95081F
oklch(42.6% 0.167 22.5)
-
Step 900
900
#78171F
oklch(37.7% 0.131 22.3)
-
Step 950
950 (this color)
#511A1B
oklch(30.5% 0.083 22.3)
#511A1B 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) | #28251B | 0.088 |
| Deuteranopia (no green cones) | #36311A | 0.082 |
| Tritanopia (no blue cones) | #590F1B | 0.024 |
| Achromatopsia (no color) | #2C2C2C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511A1B
#511A1B
oklch(30.5% 0.083 22.3)
- #00373A
#00373A
oklch(30.6% 0.052 200.7)
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 #511A1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.050
- Chocolate Brown #411900 ΔE 0.052
- Mahogany #4A0100 ΔE 0.053
- Claret #680018 ΔE 0.054
- Reddy Brown #6E1005 ΔE 0.065
- Deep Brown #410200 ΔE 0.069
- Dark Brown #341C02 ΔE 0.076
- Dark Maroon #3C0008 ΔE 0.080
Use #511A1B 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.