#511657
Closest named color: Plum Purple (#4E0550). oklch(32.7% 0.122 323.9), rgb(81, 22, 87).
Aa
White text reads best on this color (13.10:1).
About this color
#511657 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.122 and its hue 324°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Plum Purple (#4E0550), ΔE 0.028 away. White text reads best on it, at 13.10:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Plum Purple (#4E0550) |
| Black text | 1.60:1 |
| White text | 13.10:1 |
Values
| HEX | #511657 |
| RGB | rgb(81, 22, 87) |
| HSL | hsl(294, 60%, 21%) |
| OKLCH | oklch(32.7% 0.122 323.9) |
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 #511657 | 13.10:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #511657 | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #511657 text on white | 13.10:1 | AAA | Lc 98.7 | Preferred for body text |
| #511657 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
#FAF3FA
oklch(97.2% 0.012 325.7)
-
Step 100
100
#F3E4F4
oklch(93.5% 0.027 323.9)
-
Step 200
200
#EBCEED
oklch(88.5% 0.052 324)
-
Step 300
300
#DEADE2
oklch(80.9% 0.09 323.9)
-
Step 400
400
#CD7FD4
oklch(70.8% 0.146 324)
-
Step 500
500
#BE5AC8
oklch(63.1% 0.187 323.9)
-
Step 600
600
#AA3AB5
oklch(55.7% 0.204 324)
-
Step 700
700
#912B9C
oklch(49.1% 0.19 323.7)
-
Step 800
800
#76267E
oklch(42.7% 0.156 324)
-
Step 900
900 (this color)
#511657
oklch(32.7% 0.122 323.9)
-
Step 950
950
#38173B
oklch(27% 0.076 324.2)
#511657 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) | #052C59 | 0.127 |
| Deuteranopia (no green cones) | #213355 | 0.108 |
| Tritanopia (no blue cones) | #532134 | 0.073 |
| Achromatopsia (no color) | #303030 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511657
#511657
oklch(32.7% 0.122 323.9)
- #004107
#004107
oklch(32.6% 0.106 144)
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 #511657, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Plum Purple #4E0550 ΔE 0.028
- Grape Purple #5D1451 ΔE 0.029
- Deep Violet #490648 ΔE 0.040
- Royal Purple #4B006E ΔE 0.053
- Eggplant Purple #430541 ΔE 0.057
- Rich Purple #720058 ΔE 0.072
- Velvet #750851 ΔE 0.080
- Aubergine #3D0734 ΔE 0.080
Use #511657 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.