#513E8A
Closest named color: Dark Slate Blue (#483D8B). oklch(42.4% 0.122 291.9), rgb(81, 62, 138).
Aa
White text reads best on this color (8.72:1).
About this color
#513E8A is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.122 and its hue 292°. 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 8.72:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #513E8A |
| RGB | rgb(81, 62, 138) |
| HSL | hsl(255, 38%, 39%) |
| OKLCH | oklch(42.4% 0.122 291.9) |
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 #513E8A | 8.72:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #513E8A | 2.40:1 | Fails | Lc 14.3 | Not readable |
| #513E8A text on white | 8.72:1 | AAA | Lc 89.7 | Fine for body text |
| #513E8A text on black | 2.40:1 | Fails | Lc -12.6 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F7
oklch(93.7% 0.02 292.1)
-
Step 200
200
#D9D5F2
oklch(88.5% 0.04 291.9)
-
Step 300
300
#C1B9EB
oklch(80.9% 0.07 292.1)
-
Step 400
400
#A293E2
oklch(70.7% 0.114 291.9)
-
Step 500
500
#8C76D9
oklch(63% 0.146 291.9)
-
Step 600
600
#775DC7
oklch(55.6% 0.159 291.7)
-
Step 700
700
#644CAC
oklch(49.1% 0.147 291.5)
-
Step 800
800 (this color)
#513E8A
oklch(42.4% 0.122 291.9)
-
Step 900
900
#43366F
oklch(37.6% 0.095 291.7)
-
Step 950
950
#272041
oklch(26.9% 0.06 291.6)
#513E8A 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) | #1B4C8D | 0.073 |
| Deuteranopia (no green cones) | #1F4988 | 0.069 |
| Tritanopia (no blue cones) | #424E5E | 0.098 |
| Achromatopsia (no color) | #4B4B4B | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513E8A
#513E8A
oklch(42.4% 0.122 291.9)
- #505300
#505300
oklch(42.5% 0.094 112.2)
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 #513E8A, 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 0.027
- Rebecca Purple #663399 ΔE 0.050
- Twilight #4E518B ΔE 0.051
- Dusk #4E5481 ΔE 0.065
- Cobalt #1E488F ΔE 0.069
- Dusk Blue #26538D ΔE 0.074
- Denim Blue #3B5B92 ΔE 0.080
Use #513E8A 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.