#511F55
Closest named color: Grape Purple (#5D1451). oklch(33.7% 0.107 324.6), rgb(81, 31, 85).
Aa
White text reads best on this color (12.52:1).
About this color
#511F55 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.107 and its hue 325°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.030 away. White text reads best on it, at 12.52:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.67:1 |
| White text | 12.52:1 |
Values
| HEX | #511F55 |
| RGB | rgb(81, 31, 85) |
| HSL | hsl(296, 47%, 23%) |
| OKLCH | oklch(33.7% 0.107 324.6) |
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 #511F55 | 12.52:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #511F55 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #511F55 text on white | 12.52:1 | AAA | Lc 97.9 | Preferred for body text |
| #511F55 text on black | 1.67:1 | 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
#F9F3F9
oklch(97% 0.01 325.7)
-
Step 100
100
#F2E5F3
oklch(93.6% 0.023 323.6)
-
Step 200
200
#E9D0EA
oklch(88.6% 0.044 324.8)
-
Step 300
300
#DBAFDE
oklch(80.8% 0.081 324.2)
-
Step 400
400
#C884CD
oklch(70.8% 0.127 324.4)
-
Step 500
500
#B962BF
oklch(63.1% 0.163 324.9)
-
Step 600
600
#A445AC
oklch(55.6% 0.179 324.5)
-
Step 700
700
#8C3693
oklch(49% 0.165 324.6)
-
Step 800
800
#722E78
oklch(42.7% 0.137 324.4)
-
Step 900
900 (this color)
#511F55
oklch(33.7% 0.107 324.6)
-
Step 950
950
#361938
oklch(26.9% 0.067 324.8)
#511F55 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) | #173057 | 0.106 |
| Deuteranopia (no green cones) | #283654 | 0.093 |
| Tritanopia (no blue cones) | #532636 | 0.063 |
| Achromatopsia (no color) | #343434 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511F55
#511F55
oklch(33.7% 0.107 324.6)
- #01440B
#01440B
oklch(33.6% 0.106 144.5)
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 #511F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.030
- Plum Purple #4E0550 ΔE 0.044
- Deep Violet #490648 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.067
- Royal Purple #4B006E ΔE 0.067
- Rich Purple #720058 ΔE 0.074
- Velvet #750851 ΔE 0.079
- Aubergine #3D0734 ΔE 0.086
Use #511F55 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.