#512781
Closest named color: Dark Slate Blue (#483D8B). oklch(38% 0.144 301.1), rgb(81, 39, 129).
Aa
White text reads best on this color (10.73:1).
About this color
#512781 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.144 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.053 away. White text reads best on it, at 10.73:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.95:1 |
| White text | 10.73:1 |
Values
| HEX | #512781 |
| RGB | rgb(81, 39, 129) |
| HSL | hsl(268, 54%, 33%) |
| OKLCH | oklch(38% 0.144 301.1) |
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 #512781 | 10.73:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #512781 | 1.95:1 | Fails | Lc 9.6 | Not readable |
| #512781 text on white | 10.73:1 | AAA | Lc 94.3 | Preferred for body text |
| #512781 text on black | 1.95:1 | Fails | Lc -8.3 | 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
#F7F3FE
oklch(97% 0.015 302.6)
-
Step 100
100
#EDE5FC
oklch(93.5% 0.032 301.6)
-
Step 200
200
#E0D1FB
oklch(88.6% 0.059 301.5)
-
Step 300
300
#CCB0FC
oklch(80.8% 0.109 300.9)
-
Step 400
400
#B483FA
oklch(70.7% 0.173 301.1)
-
Step 500
500
#A35DF7
oklch(63.2% 0.221 301.2)
-
Step 600
600
#8F3AE6
oklch(55.6% 0.241 301.2)
-
Step 700
700
#7A2AC8
oklch(49.2% 0.224 301.1)
-
Step 800
800
#6326A1
oklch(42.7% 0.185 301.3)
-
Step 900
900 (this color)
#512781
oklch(38% 0.144 301.1)
-
Step 950
950
#2F184B
oklch(27.1% 0.091 301.3)
#512781 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) | #003D84 | 0.105 |
| Deuteranopia (no green cones) | #003D7F | 0.106 |
| Tritanopia (no blue cones) | #473C50 | 0.109 |
| Achromatopsia (no color) | #3E3E3E | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #512781
#512781
oklch(38% 0.144 301.1)
- #3B4900
#3B4900
oklch(37.9% 0.091 121.3)
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 #512781, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.053
- Indigo #4B0082 ΔE 0.054
- Rebecca Purple #663399 ΔE 0.063
- Royal Purple #4B006E ΔE 0.067
- Blueberry #464196 ΔE 0.068
- Imperial Purple #480CA8 ΔE 0.076
- Chrysanthemum #560BAD ΔE 0.077
- Grape Purple #5D1451 ΔE 0.091
Use #512781 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.