#511B6F
Closest named color: Royal Purple (#4B006E). oklch(35% 0.14 310.5), rgb(81, 27, 111).
Aa
White text reads best on this color (12.09:1).
About this color
#511B6F is a dark, vivid purple. In OKLCH its lightness is 35%, its chroma 0.140 and its hue 310°. 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 12.09:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | vivid (0.140) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.73:1 |
| White text | 12.09:1 |
Values
| HEX | #511B6F |
| RGB | rgb(81, 27, 111) |
| HSL | hsl(279, 61%, 27%) |
| OKLCH | oklch(35% 0.14 310.5) |
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 #511B6F | 12.09:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #511B6F | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #511B6F text on white | 12.09:1 | AAA | Lc 96.9 | Preferred for body text |
| #511B6F text on black | 1.73:1 | 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
#F8F3FD
oklch(97.1% 0.014 308.3)
-
Step 100
100
#F0E5F9
oklch(93.6% 0.029 310.1)
-
Step 200
200
#E5CFF6
oklch(88.5% 0.058 310.4)
-
Step 300
300
#D6AEF3
oklch(81% 0.104 310.5)
-
Step 400
400
#C17FED
oklch(70.7% 0.168 310.4)
-
Step 500
500
#B258E7
oklch(63.1% 0.215 310.7)
-
Step 600
600
#9D35D5
oklch(55.5% 0.234 310.5)
-
Step 700
700
#8625B9
oklch(49.1% 0.217 310.2)
-
Step 800
800
#6D2296
oklch(42.7% 0.18 310.2)
-
Step 900
900 (this color)
#511B6F
oklch(35% 0.14 310.5)
-
Step 950
950
#341646
oklch(27% 0.09 310.6)
#511B6F 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) | #003471 | 0.119 |
| Deuteranopia (no green cones) | #0B376D | 0.116 |
| Tritanopia (no blue cones) | #4D2E43 | 0.096 |
| Achromatopsia (no color) | #363636 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511B6F
#511B6F
oklch(35% 0.14 310.5)
- #294400
#294400
oklch(35.1% 0.095 130.5)
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 #511B6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.038
- Indigo #4B0082 ΔE 0.047
- Grape Purple #5D1451 ΔE 0.060
- Plum Purple #4E0550 ΔE 0.062
- Deep Violet #490648 ΔE 0.077
- Rich Purple #720058 ΔE 0.085
- Dark Slate Blue #483D8B ΔE 0.086
- Eggplant Purple #430541 ΔE 0.093
Use #511B6F 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.