#513B8A
Closest named color: Dark Slate Blue (#483D8B). oklch(41.9% 0.126 293), rgb(81, 59, 138).
Aa
White text reads best on this color (8.96:1).
About this color
#513B8A is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.126 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.016 away. White text reads best on it, at 8.96:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.34:1 |
| White text | 8.96:1 |
Values
| HEX | #513B8A |
| RGB | rgb(81, 59, 138) |
| HSL | hsl(257, 40%, 39%) |
| OKLCH | oklch(41.9% 0.126 293) |
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 #513B8A | 8.96:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #513B8A | 2.34:1 | Fails | Lc 13.7 | Not readable |
| #513B8A text on white | 8.96:1 | AAA | Lc 90.3 | Preferred for body text |
| #513B8A text on black | 2.34:1 | Fails | Lc -12.0 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE8F7
oklch(93.7% 0.02 292.1)
-
Step 200
200
#D9D5F3
oklch(88.5% 0.041 291.7)
-
Step 300
300
#C2B8ED
oklch(80.9% 0.075 293.3)
-
Step 400
400
#A392E3
oklch(70.6% 0.117 292.8)
-
Step 500
500
#8E75DB
oklch(63.1% 0.15 292.9)
-
Step 600
600
#795BC9
oklch(55.6% 0.164 292.8)
-
Step 700
700
#664AAE
oklch(49.1% 0.153 292.8)
-
Step 800
800 (this color)
#513B8A
oklch(41.9% 0.126 293)
-
Step 900
900
#443570
oklch(37.6% 0.098 292.8)
-
Step 950
950
#282042
oklch(27.1% 0.062 292.6)
#513B8A 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) | #134A8D | 0.079 |
| Deuteranopia (no green cones) | #194888 | 0.076 |
| Tritanopia (no blue cones) | #424C5C | 0.103 |
| Achromatopsia (no color) | #494949 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513B8A
#513B8A
oklch(41.9% 0.126 293)
- #4D5100
#4D5100
oklch(41.7% 0.093 113)
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 #513B8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.016
- Blueberry #464196 ΔE 0.029
- Rebecca Purple #663399 ΔE 0.048
- Twilight #4E518B ΔE 0.058
- Cobalt #1E488F ΔE 0.071
- Dusk #4E5481 ΔE 0.072
- Dusk Blue #26538D ΔE 0.080
- Light Navy #155084 ΔE 0.087
Use #513B8A 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.