#511B40
Closest named color: Grape Purple (#5D1451). oklch(32% 0.094 341.9), rgb(81, 27, 64).
Aa
White text reads best on this color (13.28:1).
About this color
#511B40 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.094 and its hue 342°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.041 away. White text reads best on it, at 13.28:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.094) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.58:1 |
| White text | 13.28:1 |
Values
| HEX | #511B40 |
| RGB | rgb(81, 27, 64) |
| HSL | hsl(319, 50%, 21%) |
| OKLCH | oklch(32% 0.094 341.9) |
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 #511B40 | 13.28:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #511B40 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #511B40 text on white | 13.28:1 | AAA | Lc 99.2 | Preferred for body text |
| #511B40 text on black | 1.58:1 | 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 950.
-
Step 50
50
#FDF2F8
oklch(97.1% 0.014 343.2)
-
Step 100
100
#FAE2F0
oklch(93.6% 0.032 341.8)
-
Step 200
200
#F7CAE5
oklch(88.6% 0.062 341.7)
-
Step 300
300
#F2A4D5
oklch(80.9% 0.111 341.7)
-
Step 400
400
#E86DBF
oklch(70.6% 0.178 342)
-
Step 500
500
#DE3BAF
oklch(63.2% 0.228 342.1)
-
Step 600
600
#C60099
oklch(55.5% 0.239 342)
-
Step 700
700
#A80081
oklch(49.1% 0.211 342.1)
-
Step 800
800
#8B006A
oklch(42.7% 0.184 342.2)
-
Step 900
900
#710F57
oklch(37.7% 0.149 341.9)
-
Step 950
950 (this color)
#511B40
oklch(32% 0.094 341.9)
#511B40 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) | #1F2A41 | 0.101 |
| Deuteranopia (no green cones) | #2F333F | 0.089 |
| Tritanopia (no blue cones) | #561C2A | 0.042 |
| Achromatopsia (no color) | #303030 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511B40
#511B40
oklch(32% 0.094 341.9)
- #003D27
#003D27
oklch(31.8% 0.07 161.9)
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 #511B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.041
- Deep Violet #490648 ΔE 0.049
- Plum Purple #4E0550 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.057
- Burgundy #610023 ΔE 0.061
- Aubergine #3D0734 ΔE 0.067
- Dark Plum #3F012C ΔE 0.074
- Merlot #730039 ΔE 0.075
Use #511B40 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.