#512381
Closest named color: Indigo (#4B0082). oklch(37.5% 0.15 301.9), rgb(81, 35, 129).
Aa
White text reads best on this color (11.01:1).
About this color
#512381 is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.150 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.046 away. White text reads best on it, at 11.01:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.90:1 |
| White text | 11.01:1 |
Values
| HEX | #512381 |
| RGB | rgb(81, 35, 129) |
| HSL | hsl(269, 57%, 32%) |
| OKLCH | oklch(37.5% 0.15 301.9) |
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 #512381 | 11.01:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #512381 | 1.90:1 | Fails | Lc 9.1 | Not readable |
| #512381 text on white | 11.01:1 | AAA | Lc 94.8 | Preferred for body text |
| #512381 text on black | 1.90:1 | Fails | Lc -7.8 | 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
#EEE5FD
oklch(93.6% 0.033 302.7)
-
Step 200
200
#E0D0FC
oklch(88.5% 0.062 301.7)
-
Step 300
300
#CEAFFD
oklch(80.9% 0.112 302.2)
-
Step 400
400
#B681FC
oklch(70.7% 0.179 301.9)
-
Step 500
500
#A559FA
oklch(63.1% 0.23 301.8)
-
Step 600
600
#9135E9
oklch(55.6% 0.249 301.7)
-
Step 700
700
#7C23CA
oklch(49% 0.232 302)
-
Step 800
800
#6522A4
oklch(42.8% 0.192 301.9)
-
Step 900
900 (this color)
#512381
oklch(37.5% 0.15 301.9)
-
Step 950
950
#30174C
oklch(27.1% 0.094 302.2)
#512381 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) | #003B84 | 0.108 |
| Deuteranopia (no green cones) | #003C7F | 0.110 |
| Tritanopia (no blue cones) | #47394F | 0.110 |
| Achromatopsia (no color) | #3C3C3C | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #512381
#512381
oklch(37.5% 0.15 301.9)
- #394800
#394800
oklch(37.5% 0.091 122.2)
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 #512381, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.060
- Royal Purple #4B006E ΔE 0.060
- Rebecca Purple #663399 ΔE 0.067
- Imperial Purple #480CA8 ΔE 0.073
- Blueberry #464196 ΔE 0.075
- Chrysanthemum #560BAD ΔE 0.075
- Grape Purple #5D1451 ΔE 0.089
Use #512381 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.