#511966
Closest named color: Royal Purple (#4B006E). oklch(34.1% 0.133 315.1), rgb(81, 25, 102).
Aa
White text reads best on this color (12.49:1).
About this color
#511966 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.133 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.038 away. White text reads best on it, at 12.49:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.68:1 |
| White text | 12.49:1 |
Values
| HEX | #511966 |
| RGB | rgb(81, 25, 102) |
| HSL | hsl(284, 61%, 25%) |
| OKLCH | oklch(34.1% 0.133 315.1) |
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 #511966 | 12.49:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #511966 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #511966 text on white | 12.49:1 | AAA | Lc 97.6 | Preferred for body text |
| #511966 text on black | 1.68:1 | 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 900.
-
Step 50
50
#F9F3FC
oklch(97.1% 0.013 314.8)
-
Step 100
100
#F1E4F8
oklch(93.5% 0.03 314)
-
Step 200
200
#E7CFF3
oklch(88.5% 0.055 314.5)
-
Step 300
300
#D9ADED
oklch(80.8% 0.1 315.1)
-
Step 400
400
#C67FE4
oklch(70.8% 0.159 315.2)
-
Step 500
500
#B659DC
oklch(63.1% 0.204 314.9)
-
Step 600
600
#A237C9
oklch(55.5% 0.222 315.3)
-
Step 700
700
#8B27AE
oklch(49.1% 0.207 315.4)
-
Step 800
800
#71248D
oklch(42.8% 0.171 315.3)
-
Step 900
900 (this color)
#511966
oklch(34.1% 0.133 315.1)
-
Step 950
950
#351642
oklch(26.9% 0.085 314.7)
#511966 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) | #003168 | 0.123 |
| Deuteranopia (no green cones) | #173564 | 0.112 |
| Tritanopia (no blue cones) | #4F293E | 0.086 |
| Achromatopsia (no color) | #343434 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511966
#511966
oklch(34.1% 0.133 315.1)
- #1F4300
#1F4300
oklch(34.2% 0.1 135)
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 #511966, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.038
- Grape Purple #5D1451 ΔE 0.047
- Plum Purple #4E0550 ΔE 0.047
- Indigo #4B0082 ΔE 0.058
- Deep Violet #490648 ΔE 0.062
- Rich Purple #720058 ΔE 0.078
- Eggplant Purple #430541 ΔE 0.078
- Velvet #750851 ΔE 0.088
Use #511966 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.