#4B3D8B
Closest named color: Dark Slate Blue (#483D8B). oklch(41.7% 0.125 288), rgb(75, 61, 139).
Aa
White text reads best on this color (8.97:1).
About this color
#4B3D8B is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.125 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.005 away. White text reads best on it, at 8.97:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.33:1 |
| White text | 8.97:1 |
Values
| HEX | #4B3D8B |
| RGB | rgb(75, 61, 139) |
| HSL | hsl(251, 39%, 39%) |
| OKLCH | oklch(41.7% 0.125 288) |
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 #4B3D8B | 8.97:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #4B3D8B | 2.33:1 | Fails | Lc 13.6 | Not readable |
| #4B3D8B text on white | 8.97:1 | AAA | Lc 90.4 | Preferred for body text |
| #4B3D8B text on black | 2.33:1 | Fails | Lc -11.9 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D6F3
oklch(88.6% 0.04 287.1)
-
Step 300
300
#BEBAEE
oklch(81% 0.073 288.2)
-
Step 400
400
#9D94E5
oklch(70.6% 0.117 288.1)
-
Step 500
500
#8778DD
oklch(63.2% 0.148 288.2)
-
Step 600
600
#715ECB
oklch(55.5% 0.162 287.9)
-
Step 700
700
#5F4DB0
oklch(49.1% 0.151 287.9)
-
Step 800
800 (this color)
#4B3D8B
oklch(41.7% 0.125 288)
-
Step 900
900
#403771
oklch(37.7% 0.096 288)
-
Step 950
950
#252142
oklch(27% 0.06 287.2)
#4B3D8B 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) | #144B8E | 0.069 |
| Deuteranopia (no green cones) | #144789 | 0.068 |
| Tritanopia (no blue cones) | #374E5E | 0.103 |
| Achromatopsia (no color) | #494949 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3D8B
#4B3D8B
oklch(41.7% 0.125 288)
- #514F00
#514F00
oklch(41.6% 0.09 108.1)
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 #4B3D8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.005
- Blueberry #464196 ΔE 0.021
- Twilight #4E518B ΔE 0.055
- Rebecca Purple #663399 ΔE 0.057
- Cobalt #1E488F ΔE 0.060
- Dusk #4E5481 ΔE 0.069
- Dusk Blue #26538D ΔE 0.071
- Light Navy #155084 ΔE 0.078
Use #4B3D8B 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.