#513B87
Closest named color: Dark Slate Blue (#483D8B). oklch(41.6% 0.122 293.8), rgb(81, 59, 135).
Aa
White text reads best on this color (9.03:1).
About this color
#513B87 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.122 and its hue 294°. 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 9.03:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.32:1 |
| White text | 9.03:1 |
Values
| HEX | #513B87 |
| RGB | rgb(81, 59, 135) |
| HSL | hsl(257, 39%, 38%) |
| OKLCH | oklch(41.6% 0.122 293.8) |
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 #513B87 | 9.03:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #513B87 | 2.32:1 | Fails | Lc 13.5 | Not readable |
| #513B87 text on white | 9.03:1 | AAA | Lc 90.5 | Preferred for body text |
| #513B87 text on black | 2.32:1 | Fails | Lc -11.8 | 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
#DAD5F2
oklch(88.6% 0.04 293.5)
-
Step 300
300
#C2B8EB
oklch(80.8% 0.072 293.7)
-
Step 400
400
#A492E1
oklch(70.6% 0.115 293.7)
-
Step 500
500
#8F75D8
oklch(63% 0.146 293.9)
-
Step 600
600
#7A5CC6
oklch(55.6% 0.159 293.6)
-
Step 700
700
#674BAB
oklch(49.1% 0.148 293.7)
-
Step 800
800 (this color)
#513B87
oklch(41.6% 0.122 293.8)
-
Step 900
900
#45366F
oklch(37.8% 0.095 293.5)
-
Step 950
950
#282041
oklch(27% 0.06 293.1)
#513B87 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) | #184A8A | 0.077 |
| Deuteranopia (no green cones) | #1E4885 | 0.073 |
| Tritanopia (no blue cones) | #434B5B | 0.098 |
| Achromatopsia (no color) | #494949 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513B87
#513B87
oklch(41.6% 0.122 293.8)
- #4C5100
#4C5100
oklch(41.6% 0.093 113.8)
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 #513B87, 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 0.032
- Rebecca Purple #663399 ΔE 0.051
- Twilight #4E518B ΔE 0.058
- Dusk #4E5481 ΔE 0.071
- Cobalt #1E488F ΔE 0.072
- Dusk Blue #26538D ΔE 0.080
- Light Navy #155084 ΔE 0.087
Use #513B87 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.