#513990
Closest named color: Dark Slate Blue (#483D8B). oklch(41.9% 0.138 292.1), rgb(81, 57, 144).
Aa
White text reads best on this color (8.98:1).
About this color
#513990 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.138 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 0.020 away. White text reads best on it, at 8.98:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.33:1 |
| White text | 8.98:1 |
Values
| HEX | #513990 |
| RGB | rgb(81, 57, 144) |
| HSL | hsl(257, 43%, 39%) |
| OKLCH | oklch(41.9% 0.138 292.1) |
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 #513990 | 8.98:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #513990 | 2.33:1 | Fails | Lc 13.7 | Not readable |
| #513990 text on white | 8.98:1 | AAA | Lc 90.3 | Preferred for body text |
| #513990 text on black | 2.33:1 | 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
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#D9D4F5
oklch(88.4% 0.045 292.4)
-
Step 300
300
#C1B8F1
oklch(81% 0.08 291.7)
-
Step 400
400
#A391EA
oklch(70.8% 0.128 292.1)
-
Step 500
500
#8E72E3
oklch(63.1% 0.165 292.4)
-
Step 600
600
#7958D1
oklch(55.6% 0.179 292.2)
-
Step 700
700
#6647B5
oklch(49.1% 0.166 292.1)
-
Step 800
800 (this color)
#513990
oklch(41.9% 0.138 292.1)
-
Step 900
900
#443475
oklch(37.8% 0.107 291.8)
-
Step 950
950
#281F44
oklch(27% 0.067 292.5)
#513990 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) | #004A93 | 0.088 |
| Deuteranopia (no green cones) | #06478E | 0.085 |
| Tritanopia (no blue cones) | #3F4C5F | 0.110 |
| Achromatopsia (no color) | #494949 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513990
#513990
oklch(41.9% 0.138 292.1)
- #4E5100
#4E5100
oklch(41.8% 0.093 112.2)
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 #513990, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.020
- Blueberry #464196 ΔE 0.026
- Rebecca Purple #663399 ΔE 0.042
- Twilight #4E518B ΔE 0.064
- Cobalt #1E488F ΔE 0.074
- Chrysanthemum #560BAD ΔE 0.079
- Dusk #4E5481 ΔE 0.080
- Imperial Purple #480CA8 ΔE 0.082
Use #513990 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.