#513383
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.129 297.5), rgb(81, 51, 131).
Aa
White text reads best on this color (9.76:1).
About this color
#513383 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.129 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.030 away. White text reads best on it, at 9.76:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.15:1 |
| White text | 9.76:1 |
Values
| HEX | #513383 |
| RGB | rgb(81, 51, 131) |
| HSL | hsl(263, 44%, 36%) |
| OKLCH | oklch(40% 0.129 297.5) |
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 #513383 | 9.76:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #513383 | 2.15:1 | Fails | Lc 11.7 | Not readable |
| #513383 text on white | 9.76:1 | AAA | Lc 92.3 | Preferred for body text |
| #513383 text on black | 2.15:1 | Fails | Lc -10.1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE6FB
oklch(93.6% 0.029 298.9)
-
Step 200
200
#DDD2F9
oklch(88.5% 0.054 298.2)
-
Step 300
300
#C7B4F8
oklch(81% 0.096 297)
-
Step 400
400
#AC89F4
oklch(70.7% 0.155 297.4)
-
Step 500
500
#9A67F0
oklch(63.2% 0.198 297.6)
-
Step 600
600
#8549DE
oklch(55.6% 0.215 297.4)
-
Step 700
700
#7138C1
oklch(49.1% 0.201 297.4)
-
Step 800
800
#5C309C
oklch(42.7% 0.166 297.6)
-
Step 900
900 (this color)
#513383
oklch(40% 0.129 297.5)
-
Step 950
950
#2C1B49
oklch(27.1% 0.083 297.7)
#513383 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) | #034486 | 0.093 |
| Deuteranopia (no green cones) | #144381 | 0.086 |
| Tritanopia (no blue cones) | #454456 | 0.100 |
| Achromatopsia (no color) | #444444 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513383
#513383
oklch(40% 0.129 297.5)
- #444E00
#444E00
oklch(40.1% 0.093 117.8)
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 #513383, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.030
- Blueberry #464196 ΔE 0.047
- Rebecca Purple #663399 ΔE 0.053
- Twilight #4E518B ΔE 0.078
- Indigo #4B0082 ΔE 0.079
- Cobalt #1E488F ΔE 0.083
- Imperial Purple #480CA8 ΔE 0.086
- Chrysanthemum #560BAD ΔE 0.086
Use #513383 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.