#4B3F87
Closest named color: Dark Slate Blue (#483D8B). oklch(41.8% 0.116 288), rgb(75, 63, 135).
Aa
White text reads best on this color (8.89:1).
About this color
#4B3F87 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.116 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.011 away. White text reads best on it, at 8.89:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.36:1 |
| White text | 8.89:1 |
Values
| HEX | #4B3F87 |
| RGB | rgb(75, 63, 135) |
| HSL | hsl(250, 36%, 39%) |
| OKLCH | oklch(41.8% 0.116 288) |
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 #4B3F87 | 8.89:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #4B3F87 | 2.36:1 | Fails | Lc 13.8 | Not readable |
| #4B3F87 text on white | 8.89:1 | AAA | Lc 90.2 | Preferred for body text |
| #4B3F87 text on black | 2.36:1 | Fails | Lc -12.1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F1
oklch(88.5% 0.037 287.3)
-
Step 300
300
#BEBAEB
oklch(80.9% 0.069 288.5)
-
Step 400
400
#9D95E0
oklch(70.6% 0.108 288.2)
-
Step 500
500
#867AD8
oklch(63.2% 0.138 287.6)
-
Step 600
600
#7161C5
oklch(55.6% 0.15 287.9)
-
Step 700
700
#5F4FAA
oklch(49% 0.14 288.2)
-
Step 800
800 (this color)
#4B3F87
oklch(41.8% 0.116 288)
-
Step 900
900
#40386E
oklch(37.7% 0.09 288.1)
-
Step 950
950
#252141
oklch(27% 0.058 287.5)
#4B3F87 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) | #1F4B8A | 0.060 |
| Deuteranopia (no green cones) | #1F4885 | 0.059 |
| Tritanopia (no blue cones) | #394E5D | 0.096 |
| Achromatopsia (no color) | #4A4A4A | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3F87
#4B3F87
oklch(41.8% 0.116 288)
- #525000
#525000
oklch(41.9% 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 #4B3F87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.011
- Blueberry #464196 ΔE 0.026
- Twilight #4E518B ΔE 0.050
- Cobalt #1E488F ΔE 0.059
- Rebecca Purple #663399 ΔE 0.062
- Dusk #4E5481 ΔE 0.062
- Dusk Blue #26538D ΔE 0.066
- Light Navy #155084 ΔE 0.073
Use #4B3F87 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.