#513F9C
Closest named color: Blueberry (#464196). oklch(43.9% 0.145 287.8), rgb(81, 63, 156).
Aa
White text reads best on this color (8.26:1).
About this color
#513F9C is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.145 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.021 away. White text reads best on it, at 8.26:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.54:1 |
| White text | 8.26:1 |
Values
| HEX | #513F9C |
| RGB | rgb(81, 63, 156) |
| HSL | hsl(252, 42%, 43%) |
| OKLCH | oklch(43.9% 0.145 287.8) |
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 #513F9C | 8.26:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #513F9C | 2.54:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #513F9C text on white | 8.26:1 | AAA | Lc 88.2 | Fine for body text |
| #513F9C text on black | 2.54:1 | Fails | Lc -14.0 | 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 800.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D7D5F7
oklch(88.5% 0.047 288.1)
-
Step 300
300
#BDB9F5
oklch(81% 0.084 287.4)
-
Step 400
400
#9D92F0
oklch(70.8% 0.135 287.8)
-
Step 500
500
#8773EB
oklch(63.1% 0.174 288)
-
Step 600
600
#7258D9
oklch(55.6% 0.189 287.9)
-
Step 700
700
#6047BC
oklch(49.1% 0.175 288)
-
Step 800
800 (this color)
#513F9C
oklch(43.9% 0.145 287.8)
-
Step 900
900
#403479
oklch(37.7% 0.113 287.7)
-
Step 950
950
#251F47
oklch(26.9% 0.072 287.4)
#513F9C 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) | #00519F | 0.082 |
| Deuteranopia (no green cones) | #004C9A | 0.081 |
| Tritanopia (no blue cones) | #385467 | 0.120 |
| Achromatopsia (no color) | #4E4E4E | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513F9C
#513F9C
oklch(43.9% 0.145 287.8)
- #585500
#585500
oklch(43.8% 0.094 107.4)
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 #513F9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.021
- Dark Slate Blue #483D8B ΔE 0.032
- Rebecca Purple #663399 ΔE 0.044
- Twilight #4E518B ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Cobalt #1E488F ΔE 0.072
- Bluey Purple #6241C7 ΔE 0.074
- Sapphire #2138AB ΔE 0.076
Use #513F9C 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.