#511C69
Closest named color: Royal Purple (#4B006E). oklch(34.7% 0.132 313.2), rgb(81, 28, 105).
Aa
White text reads best on this color (12.20:1).
About this color
#511C69 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.132 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.041 away. White text reads best on it, at 12.20:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.71:1 |
| White text | 12.20:1 |
Values
| HEX | #511C69 |
| RGB | rgb(81, 28, 105) |
| HSL | hsl(281, 58%, 26%) |
| OKLCH | oklch(34.7% 0.132 313.2) |
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 #511C69 | 12.20:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #511C69 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #511C69 text on white | 12.20:1 | AAA | Lc 97.2 | Preferred for body text |
| #511C69 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
#F9F3FC
oklch(97.1% 0.013 314.8)
-
Step 100
100
#F1E5F8
oklch(93.7% 0.028 313.4)
-
Step 200
200
#E6CFF4
oklch(88.5% 0.056 312.8)
-
Step 300
300
#D7AEEE
oklch(80.9% 0.098 313.2)
-
Step 400
400
#C380E6
oklch(70.7% 0.159 313.2)
-
Step 500
500
#B35ADE
oklch(63% 0.203 313.2)
-
Step 600
600
#9F3ACC
oklch(55.6% 0.22 313.2)
-
Step 700
700
#882AB0
oklch(49.1% 0.205 313.3)
-
Step 800
800
#6E258F
oklch(42.6% 0.17 312.9)
-
Step 900
900 (this color)
#511C69
oklch(34.7% 0.132 313.2)
-
Step 950
950
#341743
oklch(27% 0.084 312.5)
#511C69 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) | #00336B | 0.120 |
| Deuteranopia (no green cones) | #163767 | 0.110 |
| Tritanopia (no blue cones) | #4E2C40 | 0.088 |
| Achromatopsia (no color) | #353535 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511C69
#511C69
oklch(34.7% 0.132 313.2)
- #234400
#234400
oklch(34.7% 0.099 133.5)
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 #511C69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.041
- Grape Purple #5D1451 ΔE 0.051
- Plum Purple #4E0550 ΔE 0.055
- Indigo #4B0082 ΔE 0.057
- Deep Violet #490648 ΔE 0.069
- Rich Purple #720058 ΔE 0.080
- Eggplant Purple #430541 ΔE 0.085
- Velvet #750851 ΔE 0.090
Use #511C69 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.