#513B80
Closest named color: Dark Slate Blue (#483D8B). oklch(41.2% 0.112 295.8), rgb(81, 59, 128).
Aa
White text reads best on this color (9.18:1).
About this color
#513B80 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.112 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.024 away. White text reads best on it, at 9.18:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #513B80 |
| RGB | rgb(81, 59, 128) |
| HSL | hsl(259, 37%, 37%) |
| OKLCH | oklch(41.2% 0.112 295.8) |
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 #513B80 | 9.18:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #513B80 | 2.28:1 | Fails | Lc 13.0 | Not readable |
| #513B80 text on white | 9.18:1 | AAA | Lc 90.9 | Preferred for body text |
| #513B80 text on black | 2.28:1 | Fails | Lc -11.4 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE8F6
oklch(93.7% 0.019 295.9)
-
Step 200
200
#DBD5EF
oklch(88.6% 0.036 296.2)
-
Step 300
300
#C4B9E7
oklch(81% 0.065 295.9)
-
Step 400
400
#A693DB
oklch(70.7% 0.105 295.7)
-
Step 500
500
#9177D1
oklch(63.2% 0.134 295.6)
-
Step 600
600
#7C5EBE
oklch(55.7% 0.145 295.7)
-
Step 700
700
#694DA4
oklch(49.2% 0.135 295.9)
-
Step 800
800 (this color)
#513B80
oklch(41.2% 0.112 295.8)
-
Step 900
900
#46366A
oklch(37.6% 0.088 296.1)
-
Step 950
950
#29203E
oklch(27% 0.055 296.3)
#513B80 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) | #204882 | 0.072 |
| Deuteranopia (no green cones) | #25477E | 0.068 |
| Tritanopia (no blue cones) | #464957 | 0.090 |
| Achromatopsia (no color) | #484848 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513B80
#513B80
oklch(41.2% 0.112 295.8)
- #495000
#495000
oklch(41.1% 0.093 115.4)
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 #513B80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.024
- Blueberry #464196 ΔE 0.041
- Rebecca Purple #663399 ΔE 0.059
- Twilight #4E518B ΔE 0.059
- Dusk #4E5481 ΔE 0.069
- Cobalt #1E488F ΔE 0.074
- Dusk Blue #26538D ΔE 0.081
- Light Navy #155084 ΔE 0.086
Use #513B80 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.