#511F23
Closest named color: Burgundy (#610023). oklch(31.5% 0.075 17.6), rgb(81, 31, 35).
Aa
White text reads best on this color (13.37:1).
About this color
#511F23 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.075 and its hue 18°. 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 13.37:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.57:1 |
| White text | 13.37:1 |
Values
| HEX | #511F23 |
| RGB | rgb(81, 31, 35) |
| HSL | hsl(355, 45%, 22%) |
| OKLCH | oklch(31.5% 0.075 17.6) |
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 #511F23 | 13.37:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #511F23 | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #511F23 text on white | 13.37:1 | AAA | Lc 99.4 | Preferred for body text |
| #511F23 text on black | 1.57:1 | 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
#FDF2F2
oklch(97% 0.012 17.4)
-
Step 100
100
#FBE3E3
oklch(93.5% 0.026 17.6)
-
Step 200
200
#F8CDCD
oklch(88.5% 0.049 18.1)
-
Step 300
300
#F5AAAB
oklch(81% 0.089 18.3)
-
Step 400
400
#EC787F
oklch(70.7% 0.143 17.7)
-
Step 500
500
#E24F5F
oklch(63.2% 0.182 17.8)
-
Step 600
600
#CD2946
oklch(55.6% 0.197 17.6)
-
Step 700
700
#B11738
oklch(49.1% 0.184 17.4)
-
Step 800
800
#90192E
oklch(42.8% 0.153 17.8)
-
Step 900
900
#731E29
oklch(37.6% 0.118 17.7)
-
Step 950
950 (this color)
#511F23
oklch(31.5% 0.075 17.6)
#511F23 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) | #2A2923 | 0.082 |
| Deuteranopia (no green cones) | #373322 | 0.075 |
| Tritanopia (no blue cones) | #591721 | 0.021 |
| Achromatopsia (no color) | #2F2F2F | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511F23
#511F23
oklch(31.5% 0.075 17.6)
- #003A3B
#003A3B
oklch(31.6% 0.054 196.7)
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 #511F23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.053
- Claret #680018 ΔE 0.058
- Chocolate Brown #411900 ΔE 0.060
- Mahogany #4A0100 ΔE 0.067
- Reddy Brown #6E1005 ΔE 0.067
- Deep Brown #410200 ΔE 0.081
- Dark Brown #341C02 ΔE 0.082
- Blood #770001 ΔE 0.086
Use #511F23 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.