#512B8D
Closest named color: Dark Slate Blue (#483D8B). oklch(39.5% 0.153 296.5), rgb(81, 43, 141).
Aa
White text reads best on this color (10.09:1).
About this color
#512B8D is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.153 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.043 away. White text reads best on it, at 10.09:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.08:1 |
| White text | 10.09:1 |
Values
| HEX | #512B8D |
| RGB | rgb(81, 43, 141) |
| HSL | hsl(263, 53%, 36%) |
| OKLCH | oklch(39.5% 0.153 296.5) |
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 #512B8D | 10.09:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #512B8D | 2.08:1 | Fails | Lc 11.1 | Not readable |
| #512B8D text on white | 10.09:1 | AAA | Lc 92.9 | Preferred for body text |
| #512B8D text on black | 2.08:1 | Fails | Lc -9.6 | 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
#F6F4FF
oklch(97.2% 0.015 294.5)
-
Step 100
100
#EBE6FE
oklch(93.6% 0.033 295.3)
-
Step 200
200
#DDD1FF
oklch(88.5% 0.064 297)
-
Step 300
300
#C7B2FF
oklch(80.9% 0.109 296.4)
-
Step 400
400
#AC85FF
oklch(70.6% 0.175 296.4)
-
Step 500
500
#9B5FFF
oklch(63.2% 0.227 296.6)
-
Step 600
600
#8837F3
oklch(55.6% 0.256 296.5)
-
Step 700
700
#7426D3
oklch(49.1% 0.237 296.6)
-
Step 800
800
#5E23AB
oklch(42.7% 0.198 296.5)
-
Step 900
900 (this color)
#512B8D
oklch(39.5% 0.153 296.5)
-
Step 950
950
#2C184F
oklch(27% 0.096 296.1)
#512B8D 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) | #004290 | 0.099 |
| Deuteranopia (no green cones) | #00408B | 0.100 |
| Tritanopia (no blue cones) | #424358 | 0.119 |
| Achromatopsia (no color) | #424242 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #512B8D
#512B8D
oklch(39.5% 0.153 296.5)
- #444C00
#444C00
oklch(39.6% 0.091 116.4)
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 #512B8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.043
- Rebecca Purple #663399 ΔE 0.049
- Blueberry #464196 ΔE 0.053
- Chrysanthemum #560BAD ΔE 0.062
- Imperial Purple #480CA8 ΔE 0.063
- Indigo #4B0082 ΔE 0.064
- Indigo Blue #3A18B1 ΔE 0.081
- Royal Purple #4B006E ΔE 0.085
Use #512B8D 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.