#512581
Closest named color: Indigo (#4B0082). oklch(37.7% 0.147 301.5), rgb(81, 37, 129).
Aa
White text reads best on this color (10.87:1).
About this color
#512581 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.147 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.050 away. White text reads best on it, at 10.87:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.93:1 |
| White text | 10.87:1 |
Values
| HEX | #512581 |
| RGB | rgb(81, 37, 129) |
| HSL | hsl(269, 55%, 33%) |
| OKLCH | oklch(37.7% 0.147 301.5) |
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 #512581 | 10.87:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #512581 | 1.93:1 | Fails | Lc 9.4 | Not readable |
| #512581 text on white | 10.87:1 | AAA | Lc 94.5 | Preferred for body text |
| #512581 text on black | 1.93:1 | Fails | Lc -8.0 | 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
#F7F3FE
oklch(97% 0.015 302.6)
-
Step 100
100
#EDE5FC
oklch(93.5% 0.032 301.6)
-
Step 200
200
#E0D0FC
oklch(88.5% 0.062 301.7)
-
Step 300
300
#CDB0FD
oklch(80.9% 0.111 301.3)
-
Step 400
400
#B582FB
oklch(70.7% 0.176 301.5)
-
Step 500
500
#A45BF8
oklch(63.1% 0.225 301.6)
-
Step 600
600
#9038E7
oklch(55.6% 0.244 301.5)
-
Step 700
700
#7B27C9
oklch(49.1% 0.228 301.6)
-
Step 800
800
#6424A3
oklch(42.8% 0.189 301.5)
-
Step 900
900 (this color)
#512581
oklch(37.7% 0.147 301.5)
-
Step 950
950
#2F174C
oklch(27% 0.094 301.1)
#512581 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) | #003C84 | 0.106 |
| Deuteranopia (no green cones) | #003C7F | 0.108 |
| Tritanopia (no blue cones) | #473B50 | 0.109 |
| Achromatopsia (no color) | #3D3D3D | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #512581
#512581
oklch(37.7% 0.147 301.5)
- #3A4800
#3A4800
oklch(37.6% 0.091 121.4)
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 #512581, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.057
- Royal Purple #4B006E ΔE 0.064
- Rebecca Purple #663399 ΔE 0.065
- Blueberry #464196 ΔE 0.072
- Imperial Purple #480CA8 ΔE 0.074
- Chrysanthemum #560BAD ΔE 0.076
- Grape Purple #5D1451 ΔE 0.090
Use #512581 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.