#511B4B
Closest named color: Grape Purple (#5D1451). oklch(32.6% 0.103 332.3), rgb(81, 27, 75).
Aa
White text reads best on this color (13.05:1).
About this color
#511B4B is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.103 and its hue 332°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.029 away. White text reads best on it, at 13.05:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.60:1 |
| White text | 13.05:1 |
Values
| HEX | #511B4B |
| RGB | rgb(81, 27, 75) |
| HSL | hsl(307, 50%, 21%) |
| OKLCH | oklch(32.6% 0.103 332.3) |
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 #511B4B | 13.05:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #511B4B | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #511B4B text on white | 13.05:1 | AAA | Lc 98.8 | Preferred for body text |
| #511B4B text on black | 1.60:1 | 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
#FAF3F9
oklch(97.1% 0.011 330.1)
-
Step 100
100
#F3E5F1
oklch(93.6% 0.022 330.3)
-
Step 200
200
#EBCFE6
oklch(88.5% 0.044 331.9)
-
Step 300
300
#DFAFD7
oklch(81% 0.077 332)
-
Step 400
400
#CE82C3
oklch(70.7% 0.125 332.2)
-
Step 500
500
#BF60B3
oklch(63% 0.159 332.2)
-
Step 600
600
#AA449F
oklch(55.6% 0.172 332)
-
Step 700
700
#923588
oklch(49.2% 0.16 332.2)
-
Step 800
800
#772D6E
oklch(42.8% 0.132 332.6)
-
Step 900
900 (this color)
#511B4B
oklch(32.6% 0.103 332.3)
-
Step 950
950
#381934
oklch(26.9% 0.064 332.2)
#511B4B 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) | #192C4C | 0.108 |
| Deuteranopia (no green cones) | #2A344A | 0.095 |
| Tritanopia (no blue cones) | #552030 | 0.055 |
| Achromatopsia (no color) | #313131 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511B4B
#511B4B
oklch(32.6% 0.103 332.3)
- #00401D
#00401D
oklch(32.5% 0.085 152.3)
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 #511B4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.029
- Plum Purple #4E0550 ΔE 0.039
- Deep Violet #490648 ΔE 0.042
- Eggplant Purple #430541 ΔE 0.055
- Aubergine #3D0734 ΔE 0.072
- Rich Purple #720058 ΔE 0.076
- Burgundy #610023 ΔE 0.077
- Royal Purple #4B006E ΔE 0.078
Use #511B4B 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.