#4B3F8B
Closest named color: Dark Slate Blue (#483D8B). oklch(42.1% 0.122 287.2), rgb(75, 63, 139).
Aa
White text reads best on this color (8.81:1).
About this color
#4B3F8B is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.122 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.008 away. White text reads best on it, at 8.81:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.38:1 |
| White text | 8.81:1 |
Values
| HEX | #4B3F8B |
| RGB | rgb(75, 63, 139) |
| HSL | hsl(249, 38%, 40%) |
| OKLCH | oklch(42.1% 0.122 287.2) |
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 #4B3F8B | 8.81:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #4B3F8B | 2.38:1 | Fails | Lc 14.1 | Not readable |
| #4B3F8B text on white | 8.81:1 | AAA | Lc 89.9 | Fine for body text |
| #4B3F8B text on black | 2.38:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D7D6F3
oklch(88.6% 0.04 287.1)
-
Step 300
300
#BDBAED
oklch(80.9% 0.072 287.4)
-
Step 400
400
#9C95E4
oklch(70.7% 0.114 287.2)
-
Step 500
500
#8579DC
oklch(63.1% 0.145 287)
-
Step 600
600
#7060C9
oklch(55.6% 0.157 287.1)
-
Step 700
700
#5E4EAE
oklch(49% 0.147 287.3)
-
Step 800
800 (this color)
#4B3F8B
oklch(42.1% 0.122 287.2)
-
Step 900
900
#3F3871
oklch(37.8% 0.095 286.6)
-
Step 950
950
#252142
oklch(27% 0.06 287.2)
#4B3F8B 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) | #1A4C8E | 0.064 |
| Deuteranopia (no green cones) | #194889 | 0.063 |
| Tritanopia (no blue cones) | #374F5E | 0.102 |
| Achromatopsia (no color) | #4A4A4A | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3F8B
#4B3F8B
oklch(42.1% 0.122 287.2)
- #535000
#535000
oklch(42% 0.09 107.2)
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 #4B3F8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.008
- Blueberry #464196 ΔE 0.020
- Twilight #4E518B ΔE 0.050
- Rebecca Purple #663399 ΔE 0.058
- Cobalt #1E488F ΔE 0.059
- Dusk #4E5481 ΔE 0.064
- Dusk Blue #26538D ΔE 0.067
- Light Navy #155084 ΔE 0.074
Use #4B3F8B 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.