#4B3578
Closest named color: Dark Slate Blue (#483D8B). oklch(38.9% 0.11 296), rgb(75, 53, 120).
Aa
White text reads best on this color (10.09:1).
About this color
#4B3578 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.110 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 0.036 away. White text reads best on it, at 10.09:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.07:1 |
| White text | 10.09:1 |
Values
| HEX | #4B3578 |
| RGB | rgb(75, 53, 120) |
| HSL | hsl(260, 39%, 34%) |
| OKLCH | oklch(38.9% 0.11 296) |
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 #4B3578 | 10.09:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #4B3578 | 2.07:1 | Fails | Lc 10.7 | Not readable |
| #4B3578 text on white | 10.09:1 | AAA | Lc 93.2 | Preferred for body text |
| #4B3578 text on black | 2.07:1 | Fails | Lc -9.3 | 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 900.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DBD4F5
oklch(88.6% 0.046 295.2)
-
Step 300
300
#C5B6F1
oklch(80.9% 0.084 296.1)
-
Step 400
400
#A88EE9
oklch(70.6% 0.132 296)
-
Step 500
500
#946FE3
oklch(63.1% 0.17 295.9)
-
Step 600
600
#8054D0
oklch(55.6% 0.184 296.3)
-
Step 700
700
#6C43B4
oklch(49% 0.171 296.2)
-
Step 800
800
#583892
oklch(42.7% 0.142 296.2)
-
Step 900
900 (this color)
#4B3578
oklch(38.9% 0.11 296)
-
Step 950
950
#2A1E44
oklch(27% 0.069 296)
#4B3578 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) | #19427A | 0.072 |
| Deuteranopia (no green cones) | #1F4176 | 0.068 |
| Tritanopia (no blue cones) | #404351 | 0.088 |
| Achromatopsia (no color) | #424242 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3578
#4B3578
oklch(38.9% 0.11 296)
- #434A00
#434A00
oklch(38.9% 0.089 115.8)
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 #4B3578, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.036
- Blueberry #464196 ΔE 0.056
- Rebecca Purple #663399 ΔE 0.074
- Twilight #4E518B ΔE 0.078
- Cobalt #1E488F ΔE 0.079
- Twilight Blue #0A437A ΔE 0.081
- Dusk #4E5481 ΔE 0.086
- Indigo #4B0082 ΔE 0.086
Use #4B3578 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.