#511F6B
Closest named color: Royal Purple (#4B006E). oklch(35.2% 0.13 311.8), rgb(81, 31, 107).
Aa
White text reads best on this color (11.94:1).
About this color
#511F6B is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.130 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 0.046 away. White text reads best on it, at 11.94:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.75:1 |
| White text | 11.94:1 |
Values
| HEX | #511F6B |
| RGB | rgb(81, 31, 107) |
| HSL | hsl(279, 55%, 27%) |
| OKLCH | oklch(35.2% 0.13 311.8) |
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 #511F6B | 11.94:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #511F6B | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #511F6B text on white | 11.94:1 | AAA | Lc 96.7 | Preferred for body text |
| #511F6B text on black | 1.75:1 | 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
#F8F3FC
oklch(97.1% 0.013 310.5)
-
Step 100
100
#F0E5F8
oklch(93.6% 0.028 311.3)
-
Step 200
200
#E5CFF4
oklch(88.4% 0.055 311.7)
-
Step 300
300
#D6AFEF
oklch(81% 0.097 311.9)
-
Step 400
400
#C181E7
oklch(70.7% 0.157 311.8)
-
Step 500
500
#B15CDF
oklch(63.1% 0.201 312)
-
Step 600
600
#9C3DCD
oklch(55.6% 0.217 311.6)
-
Step 700
700
#862DB1
oklch(49.2% 0.202 312)
-
Step 800
800
#6C278F
oklch(42.6% 0.167 311.7)
-
Step 900
900 (this color)
#511F6B
oklch(35.2% 0.13 311.8)
-
Step 950
950
#341843
oklch(27.1% 0.082 312.2)
#511F6B 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) | #00346D | 0.117 |
| Deuteranopia (no green cones) | #173869 | 0.106 |
| Tritanopia (no blue cones) | #4E2F42 | 0.089 |
| Achromatopsia (no color) | #373737 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511F6B
#511F6B
oklch(35.2% 0.13 311.8)
- #274500
#274500
oklch(35.3% 0.098 131.9)
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 #511F6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.046
- Grape Purple #5D1451 ΔE 0.054
- Indigo #4B0082 ΔE 0.057
- Plum Purple #4E0550 ΔE 0.061
- Deep Violet #490648 ΔE 0.074
- Rich Purple #720058 ΔE 0.082
- Dark Slate Blue #483D8B ΔE 0.084
- Eggplant Purple #430541 ΔE 0.090
Use #511F6B 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.