#513D71
Closest named color: Dark Slate Blue (#483D8B). oklch(40.6% 0.087 300.3), rgb(81, 61, 113).
Aa
White text reads best on this color (9.30:1).
About this color
#513D71 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.087 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.046 away. White text reads best on it, at 9.30:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #513D71 |
| RGB | rgb(81, 61, 113) |
| HSL | hsl(263, 30%, 34%) |
| OKLCH | oklch(40.6% 0.087 300.3) |
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 #513D71 | 9.30:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #513D71 | 2.25:1 | Fails | Lc 12.6 | Not readable |
| #513D71 text on white | 9.30:1 | AAA | Lc 91.4 | Preferred for body text |
| #513D71 text on black | 2.25:1 | Fails | Lc -11.0 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#EBE8F2
oklch(93.6% 0.014 299.8)
-
Step 200
200
#DCD5EA
oklch(88.5% 0.029 301)
-
Step 300
300
#C5BADD
oklch(80.9% 0.05 299.6)
-
Step 400
400
#A895CC
oklch(70.6% 0.082 300.2)
-
Step 500
500
#937ABF
oklch(63% 0.105 300.1)
-
Step 600
600
#7E62AB
oklch(55.5% 0.114 300.4)
-
Step 700
700
#6B5193
oklch(49.1% 0.106 300.7)
-
Step 800
800 (this color)
#513D71
oklch(40.6% 0.087 300.3)
-
Step 900
900
#473960
oklch(37.7% 0.067 299.7)
-
Step 950
950
#2A2138
oklch(26.9% 0.043 301.5)
#513D71 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) | #2E4773 | 0.057 |
| Deuteranopia (no green cones) | #334770 | 0.052 |
| Tritanopia (no blue cones) | #4B4651 | 0.068 |
| Achromatopsia (no color) | #474747 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513D71
#513D71
oklch(40.6% 0.087 300.3)
- #43500F
#43500F
oklch(40.6% 0.088 120.5)
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 #513D71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.046
- Twilight #4E518B ΔE 0.063
- Blueberry #464196 ΔE 0.063
- Dusk #4E5481 ΔE 0.065
- Dusty Grape #545775 ΔE 0.075
- Dark Grey Blue #29465B ΔE 0.079
- Rebecca Purple #663399 ΔE 0.081
- Cobalt #1E488F ΔE 0.083
Use #513D71 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.