#512A78
Closest named color: Dark Slate Blue (#483D8B). oklch(37.7% 0.129 303.8), rgb(81, 42, 120).
Aa
White text reads best on this color (10.75:1).
About this color
#512A78 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.129 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.054 away. White text reads best on it, at 10.75:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #512A78 |
| RGB | rgb(81, 42, 120) |
| HSL | hsl(270, 48%, 32%) |
| OKLCH | oklch(37.7% 0.129 303.8) |
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 #512A78 | 10.75:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #512A78 | 1.95:1 | Fails | Lc 9.4 | Not readable |
| #512A78 text on white | 10.75:1 | AAA | Lc 94.5 | Preferred for body text |
| #512A78 text on black | 1.95:1 | Fails | Lc -8.1 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EEE6FA
oklch(93.7% 0.028 303.9)
-
Step 200
200
#E0D1F7
oklch(88.5% 0.054 303.2)
-
Step 300
300
#CEB1F4
oklch(80.8% 0.098 304.1)
-
Step 400
400
#B686EE
oklch(70.8% 0.154 304)
-
Step 500
500
#A462E9
oklch(63% 0.199 303.8)
-
Step 600
600
#9044D7
oklch(55.7% 0.215 303.8)
-
Step 700
700
#7B34BA
oklch(49.2% 0.2 304)
-
Step 800
800
#642D97
oklch(42.8% 0.166 303.9)
-
Step 900
900 (this color)
#512A78
oklch(37.7% 0.129 303.8)
-
Step 950
950
#2F1A46
oklch(27% 0.081 303.5)
#512A78 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) | #003D7A | 0.104 |
| Deuteranopia (no green cones) | #153E76 | 0.096 |
| Tritanopia (no blue cones) | #4A3A4D | 0.093 |
| Achromatopsia (no color) | #3E3E3E | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #512A78
#512A78
oklch(37.7% 0.129 303.8)
- #384900
#384900
oklch(37.7% 0.093 123.4)
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 #512A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.054
- Indigo #4B0082 ΔE 0.063
- Royal Purple #4B006E ΔE 0.068
- Rebecca Purple #663399 ΔE 0.070
- Blueberry #464196 ΔE 0.072
- Grape Purple #5D1451 ΔE 0.079
- Plum Purple #4E0550 ΔE 0.091
- Imperial Purple #480CA8 ΔE 0.092
Use #512A78 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.