#511A6D
Closest named color: Royal Purple (#4B006E). oklch(34.8% 0.139 311.5), rgb(81, 26, 109).
Aa
White text reads best on this color (12.22:1).
About this color
#511A6D is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.139 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.036 away. White text reads best on it, at 12.22:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.71:1 |
| White text | 12.22:1 |
Values
| HEX | #511A6D |
| RGB | rgb(81, 26, 109) |
| HSL | hsl(280, 61%, 26%) |
| OKLCH | oklch(34.8% 0.139 311.5) |
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 #511A6D | 12.22:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #511A6D | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #511A6D text on white | 12.22:1 | AAA | Lc 97.1 | Preferred for body text |
| #511A6D text on black | 1.71:1 | 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
#F9F3FD
oklch(97.2% 0.015 312.2)
-
Step 100
100
#F1E5F9
oklch(93.7% 0.03 312.1)
-
Step 200
200
#E6CFF6
oklch(88.6% 0.058 311.5)
-
Step 300
300
#D7ADF2
oklch(80.8% 0.105 311.8)
-
Step 400
400
#C27FEC
oklch(70.8% 0.167 311.1)
-
Step 500
500
#B358E5
oklch(63.1% 0.213 311.6)
-
Step 600
600
#9F35D3
oklch(55.7% 0.232 311.7)
-
Step 700
700
#8825B7
oklch(49.2% 0.216 311.6)
-
Step 800
800
#6E2294
oklch(42.7% 0.179 311.4)
-
Step 900
900 (this color)
#511A6D
oklch(34.8% 0.139 311.5)
-
Step 950
950
#341645
oklch(26.9% 0.088 311.3)
#511A6D 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) | #00336F | 0.121 |
| Deuteranopia (no green cones) | #0E366B | 0.116 |
| Tritanopia (no blue cones) | #4D2D42 | 0.094 |
| Achromatopsia (no color) | #353535 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511A6D
#511A6D
oklch(34.8% 0.139 311.5)
- #274300
#274300
oklch(34.7% 0.095 131.2)
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 #511A6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.036
- Indigo #4B0082 ΔE 0.049
- Grape Purple #5D1451 ΔE 0.057
- Plum Purple #4E0550 ΔE 0.058
- Deep Violet #490648 ΔE 0.073
- Rich Purple #720058 ΔE 0.083
- Eggplant Purple #430541 ΔE 0.089
- Dark Slate Blue #483D8B ΔE 0.090
Use #511A6D 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.