#4B3390
Closest named color: Dark Slate Blue (#483D8B). oklch(40.4% 0.146 290.2), rgb(75, 51, 144).
Aa
White text reads best on this color (9.65:1).
About this color
#4B3390 is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.146 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.026 away. White text reads best on it, at 9.65:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.17:1 |
| White text | 9.65:1 |
Values
| HEX | #4B3390 |
| RGB | rgb(75, 51, 144) |
| HSL | hsl(255, 48%, 38%) |
| OKLCH | oklch(40.4% 0.146 290.2) |
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 #4B3390 | 9.65:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #4B3390 | 2.17:1 | Fails | Lc 12.0 | Not readable |
| #4B3390 text on white | 9.65:1 | AAA | Lc 91.9 | Preferred for body text |
| #4B3390 text on black | 2.17:1 | Fails | Lc -10.5 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D8D4F7
oklch(88.4% 0.048 290.6)
-
Step 300
300
#BFB8F5
oklch(81% 0.086 289.6)
-
Step 400
400
#A090EF
oklch(70.6% 0.137 290.2)
-
Step 500
500
#8B71EA
oklch(63% 0.176 290.3)
-
Step 600
600
#7656D8
oklch(55.5% 0.19 290.1)
-
Step 700
700
#6445BB
oklch(49% 0.177 290.5)
-
Step 800
800 (this color)
#4B3390
oklch(40.4% 0.146 290.2)
-
Step 900
900
#433379
oklch(37.8% 0.115 290.4)
-
Step 950
950
#271F47
oklch(27.1% 0.072 290)
#4B3390 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) | #004693 | 0.083 |
| Deuteranopia (no green cones) | #00428E | 0.082 |
| Tritanopia (no blue cones) | #35495C | 0.119 |
| Achromatopsia (no color) | #454545 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3390
#4B3390
oklch(40.4% 0.146 290.2)
- #4C4C00
#4C4C00
oklch(40.3% 0.088 109.8)
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 #4B3390, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.026
- Blueberry #464196 ΔE 0.034
- Rebecca Purple #663399 ΔE 0.053
- Imperial Purple #480CA8 ΔE 0.067
- Chrysanthemum #560BAD ΔE 0.070
- Cobalt #1E488F ΔE 0.074
- Sapphire #2138AB ΔE 0.074
- Indigo Blue #3A18B1 ΔE 0.077
Use #4B3390 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.