#513178
Closest named color: Dark Slate Blue (#483D8B). oklch(38.8% 0.118 302), rgb(81, 49, 120).
Aa
White text reads best on this color (10.19:1).
About this color
#513178 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.118 and its hue 302°. 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 10.19:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.06:1 |
| White text | 10.19:1 |
Values
| HEX | #513178 |
| RGB | rgb(81, 49, 120) |
| HSL | hsl(267, 42%, 33%) |
| OKLCH | oklch(38.8% 0.118 302) |
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 #513178 | 10.19:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #513178 | 2.06:1 | Fails | Lc 10.6 | Not readable |
| #513178 text on white | 10.19:1 | AAA | Lc 93.4 | Preferred for body text |
| #513178 text on black | 2.06:1 | Fails | Lc -9.1 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EDE6F9
oklch(93.6% 0.026 302.6)
-
Step 200
200
#DFD2F5
oklch(88.5% 0.049 302.3)
-
Step 300
300
#CBB3F1
oklch(80.8% 0.09 302.2)
-
Step 400
400
#B18AE9
oklch(70.7% 0.14 301.9)
-
Step 500
500
#9F69E3
oklch(63.2% 0.181 301.9)
-
Step 600
600
#8A4CD0
oklch(55.5% 0.196 302)
-
Step 700
700
#763CB5
oklch(49.2% 0.183 302)
-
Step 800
800
#603392
oklch(42.8% 0.151 302.2)
-
Step 900
900 (this color)
#513178
oklch(38.8% 0.118 302)
-
Step 950
950
#2E1C44
oklch(27.1% 0.074 302.6)
#513178 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) | #13417A | 0.090 |
| Deuteranopia (no green cones) | #1F4176 | 0.082 |
| Tritanopia (no blue cones) | #493F4F | 0.089 |
| Achromatopsia (no color) | #414141 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513178
#513178
oklch(38.8% 0.118 302)
- #3C4C00
#3C4C00
oklch(38.9% 0.095 122.4)
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 #513178, 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
- Blueberry #464196 ΔE 0.062
- Rebecca Purple #663399 ΔE 0.067
- Indigo #4B0082 ΔE 0.079
- Royal Purple #4B006E ΔE 0.084
- Grape Purple #5D1451 ΔE 0.085
- Twilight #4E518B ΔE 0.086
- Cobalt #1E488F ΔE 0.091
Use #513178 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.