#511D1D
Closest named color: Burgundy (#610023). oklch(31% 0.078 22.8), rgb(81, 29, 29).
Aa
White text reads best on this color (13.60:1).
About this color
#511D1D is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.078 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.053 away. White text reads best on it, at 13.60:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.54:1 |
| White text | 13.60:1 |
Values
| HEX | #511D1D |
| RGB | rgb(81, 29, 29) |
| HSL | hsl(0, 47%, 22%) |
| OKLCH | oklch(31% 0.078 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 #511D1D | 13.60:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #511D1D | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #511D1D text on white | 13.60:1 | AAA | Lc 99.7 | Preferred for body text |
| #511D1D text on black | 1.54:1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FACDC9
oklch(88.6% 0.051 24.1)
-
Step 300
300
#F7A9A5
oklch(80.9% 0.093 22.6)
-
Step 400
400
#EF7774
oklch(70.7% 0.149 23)
-
Step 500
500
#E64C50
oklch(63.2% 0.19 23)
-
Step 600
600
#D12234
oklch(55.6% 0.206 22.9)
-
Step 700
700
#B40E27
oklch(49% 0.192 22.8)
-
Step 800
800
#921422
oklch(42.6% 0.158 22.6)
-
Step 900
900
#761C20
oklch(37.8% 0.124 23.2)
-
Step 950
950 (this color)
#511D1D
oklch(31% 0.078 22.8)
#511D1D 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) | #2A271D | 0.083 |
| Deuteranopia (no green cones) | #37321C | 0.077 |
| Tritanopia (no blue cones) | #59141D | 0.023 |
| Achromatopsia (no color) | #2E2E2E | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511D1D
#511D1D
oklch(31% 0.078 22.8)
- #00383C
#00383C
oklch(31% 0.053 202.6)
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 #511D1D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.053
- Chocolate Brown #411900 ΔE 0.053
- Claret #680018 ΔE 0.056
- Mahogany #4A0100 ΔE 0.059
- Reddy Brown #6E1005 ΔE 0.065
- Deep Brown #410200 ΔE 0.075
- Dark Brown #341C02 ΔE 0.077
- Blood #770001 ΔE 0.084
Use #511D1D 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.