#513F8A
Closest named color: Dark Slate Blue (#483D8B). oklch(42.6% 0.12 291.5), rgb(81, 63, 138).
Aa
White text reads best on this color (8.64:1).
About this color
#513F8A is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.120 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 0.017 away. White text reads best on it, at 8.64:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.120) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.42:1 |
| White text | 8.64:1 |
Values
| HEX | #513F8A |
| RGB | rgb(81, 63, 138) |
| HSL | hsl(254, 37%, 39%) |
| OKLCH | oklch(42.6% 0.12 291.5) |
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 #513F8A | 8.64:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #513F8A | 2.42:1 | Fails | Lc 14.5 | Not readable |
| #513F8A text on white | 8.64:1 | AAA | Lc 89.5 | Fine for body text |
| #513F8A text on black | 2.42:1 | Fails | Lc -12.8 | 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
#C0B9EB
oklch(80.8% 0.07 291.2)
-
Step 400
400
#A193E1
oklch(70.6% 0.113 291.5)
-
Step 500
500
#8C77D8
oklch(63.1% 0.143 291.7)
-
Step 600
600
#775EC6
oklch(55.7% 0.156 291.6)
-
Step 700
700
#644DAB
oklch(49.2% 0.145 291.4)
-
Step 800
800 (this color)
#513F8A
oklch(42.6% 0.12 291.5)
-
Step 900
900
#43376F
oklch(37.8% 0.093 291.1)
-
Step 950
950
#272041
oklch(26.9% 0.06 291.6)
#513F8A 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) | #1E4D8D | 0.070 |
| Deuteranopia (no green cones) | #214A88 | 0.067 |
| Tritanopia (no blue cones) | #424F5E | 0.099 |
| Achromatopsia (no color) | #4C4C4C | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513F8A
#513F8A
oklch(42.6% 0.12 291.5)
- #515300
#515300
oklch(42.6% 0.094 111.4)
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 #513F8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.017
- Blueberry #464196 ΔE 0.027
- Twilight #4E518B ΔE 0.048
- Rebecca Purple #663399 ΔE 0.051
- Dusk #4E5481 ΔE 0.063
- Cobalt #1E488F ΔE 0.068
- Dusk Blue #26538D ΔE 0.072
- Denim Blue #3B5B92 ΔE 0.078
Use #513F8A 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.