#511F57
Closest named color: Grape Purple (#5D1451). oklch(33.8% 0.109 323.3), rgb(81, 31, 87).
Aa
White text reads best on this color (12.47:1).
About this color
#511F57 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.109 and its hue 323°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.031 away. White text reads best on it, at 12.47:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.68:1 |
| White text | 12.47:1 |
Values
| HEX | #511F57 |
| RGB | rgb(81, 31, 87) |
| HSL | hsl(294, 47%, 23%) |
| OKLCH | oklch(33.8% 0.109 323.3) |
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 #511F57 | 12.47:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #511F57 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #511F57 text on white | 12.47:1 | AAA | Lc 97.8 | Preferred for body text |
| #511F57 text on black | 1.68:1 | 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
#F2E5F3
oklch(93.6% 0.023 323.6)
-
Step 200
200
#E8D0EB
oklch(88.5% 0.045 322.5)
-
Step 300
300
#DBAFDF
oklch(80.9% 0.082 323.6)
-
Step 400
400
#C883CF
oklch(70.7% 0.131 323.6)
-
Step 500
500
#B861C2
oklch(63% 0.167 323.4)
-
Step 600
600
#A345AF
oklch(55.6% 0.181 323)
-
Step 700
700
#8C3596
oklch(49.1% 0.169 323.4)
-
Step 800
800
#722D7A
oklch(42.7% 0.14 323.4)
-
Step 900
900 (this color)
#511F57
oklch(33.8% 0.109 323.3)
-
Step 950
950
#361939
oklch(26.9% 0.069 323.7)
#511F57 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) | #153059 | 0.107 |
| Deuteranopia (no green cones) | #273656 | 0.093 |
| Tritanopia (no blue cones) | #522737 | 0.065 |
| Achromatopsia (no color) | #343434 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511F57
#511F57
oklch(33.8% 0.109 323.3)
- #044507
#044507
oklch(34% 0.109 143.2)
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 #511F57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.031
- Plum Purple #4E0550 ΔE 0.044
- Deep Violet #490648 ΔE 0.053
- Royal Purple #4B006E ΔE 0.065
- Eggplant Purple #430541 ΔE 0.068
- Rich Purple #720058 ΔE 0.074
- Velvet #750851 ΔE 0.079
- Indigo #4B0082 ΔE 0.088
Use #511F57 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.