#513F9F
Closest named color: Blueberry (#464196). oklch(44.1% 0.149 287.3), rgb(81, 63, 159).
Aa
White text reads best on this color (8.19:1).
About this color
#513F9F is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.149 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.023 away. White text reads best on it, at 8.19:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #513F9F |
| RGB | rgb(81, 63, 159) |
| HSL | hsl(251, 43%, 44%) |
| OKLCH | oklch(44.1% 0.149 287.3) |
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 #513F9F | 8.19:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #513F9F | 2.56:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #513F9F text on white | 8.19:1 | AAA | Lc 88.0 | Fine for body text |
| #513F9F text on black | 2.56:1 | Fails | Lc -14.2 | 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
#D6D5F8
oklch(88.5% 0.048 286.7)
-
Step 300
300
#BCB8F7
oklch(80.8% 0.088 287.2)
-
Step 400
400
#9C91F2
oklch(70.6% 0.139 287.5)
-
Step 500
500
#8673EE
oklch(63.2% 0.178 287.3)
-
Step 600
600
#7157DC
oklch(55.5% 0.194 287.3)
-
Step 700
700
#5F46BF
oklch(49% 0.181 287.3)
-
Step 800
800 (this color)
#513F9F
oklch(44.1% 0.149 287.3)
-
Step 900
900
#40347B
oklch(37.8% 0.116 287.3)
-
Step 950
950
#251F48
oklch(27% 0.074 287.1)
#513F9F 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) | #0051A2 | 0.082 |
| Deuteranopia (no green cones) | #004C9D | 0.080 |
| Tritanopia (no blue cones) | #365569 | 0.123 |
| Achromatopsia (no color) | #4F4F4F | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513F9F
#513F9F
oklch(44.1% 0.149 287.3)
- #595600
#595600
oklch(44.2% 0.095 107.4)
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 #513F9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.023
- Dark Slate Blue #483D8B ΔE 0.036
- Rebecca Purple #663399 ΔE 0.045
- Twilight #4E518B ΔE 0.061
- Blue With A Hint Of Purple #533CC6 ΔE 0.063
- Bluey Purple #6241C7 ΔE 0.070
- Blurple #5539CC ΔE 0.073
- Cobalt #1E488F ΔE 0.073
Use #513F9F 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.