#511C5B
Closest named color: Grape Purple (#5D1451). oklch(33.7% 0.118 321), rgb(81, 28, 91).
Aa
White text reads best on this color (12.59:1).
About this color
#511C5B is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.118 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.033 away. White text reads best on it, at 12.59:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.66:1 |
| White text | 12.59:1 |
Values
| HEX | #511C5B |
| RGB | rgb(81, 28, 91) |
| HSL | hsl(290, 53%, 23%) |
| OKLCH | oklch(33.7% 0.118 321) |
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 #511C5B | 12.59:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #511C5B | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #511C5B text on white | 12.59:1 | AAA | Lc 98.0 | Preferred for body text |
| #511C5B text on black | 1.66:1 | 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
#F9F3FA
oklch(97.1% 0.011 321.3)
-
Step 100
100
#F2E5F4
oklch(93.7% 0.024 321.7)
-
Step 200
200
#E9CFED
oklch(88.5% 0.049 321.7)
-
Step 300
300
#DBAEE4
oklch(80.9% 0.089 320.7)
-
Step 400
400
#C881D6
oklch(70.7% 0.142 320.8)
-
Step 500
500
#B95ECA
oklch(63.1% 0.18 321.1)
-
Step 600
600
#A440B7
oklch(55.6% 0.196 320.9)
-
Step 700
700
#8C309E
oklch(49% 0.183 320.6)
-
Step 800
800
#722A80
oklch(42.7% 0.151 320.8)
-
Step 900
900 (this color)
#511C5B
oklch(33.7% 0.118 321)
-
Step 950
950
#36183C
oklch(26.9% 0.074 320.7)
#511C5B 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) | #0B2F5D | 0.117 |
| Deuteranopia (no green cones) | #223559 | 0.101 |
| Tritanopia (no blue cones) | #522638 | 0.072 |
| Achromatopsia (no color) | #333333 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511C5B
#511C5B
oklch(33.7% 0.118 321)
- #0A4400
#0A4400
oklch(33.7% 0.111 140.9)
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 #511C5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.033
- Plum Purple #4E0550 ΔE 0.040
- Deep Violet #490648 ΔE 0.051
- Royal Purple #4B006E ΔE 0.055
- Eggplant Purple #430541 ΔE 0.067
- Rich Purple #720058 ΔE 0.073
- Indigo #4B0082 ΔE 0.079
- Velvet #750851 ΔE 0.081
Use #511C5B 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.