#4B3993
Closest named color: Dark Slate Blue (#483D8B). oklch(41.6% 0.142 287.8), rgb(75, 57, 147).
Aa
White text reads best on this color (9.10:1).
About this color
#4B3993 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.142 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.017 away. White text reads best on it, at 9.10:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.30:1 |
| White text | 9.10:1 |
Values
| HEX | #4B3993 |
| RGB | rgb(75, 57, 147) |
| HSL | hsl(252, 44%, 40%) |
| OKLCH | oklch(41.6% 0.142 287.8) |
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 #4B3993 | 9.10:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #4B3993 | 2.30:1 | Fails | Lc 13.4 | Not readable |
| #4B3993 text on white | 9.10:1 | AAA | Lc 90.6 | Preferred for body text |
| #4B3993 text on black | 2.30:1 | Fails | Lc -11.7 | 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
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D7D5F7
oklch(88.5% 0.047 288.1)
-
Step 300
300
#BDB9F4
oklch(81% 0.083 287.5)
-
Step 400
400
#9D92EE
oklch(70.7% 0.132 288)
-
Step 500
500
#8774E8
oklch(63.1% 0.169 288.1)
-
Step 600
600
#7259D7
oklch(55.6% 0.185 288)
-
Step 700
700
#6048BA
oklch(49.1% 0.172 288.1)
-
Step 800
800 (this color)
#4B3993
oklch(41.6% 0.142 287.8)
-
Step 900
900
#403578
oklch(37.8% 0.11 287.5)
-
Step 950
950
#251F46
oklch(26.9% 0.07 287.8)
#4B3993 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) | #004A96 | 0.078 |
| Deuteranopia (no green cones) | #004691 | 0.078 |
| Tritanopia (no blue cones) | #334E60 | 0.118 |
| Achromatopsia (no color) | #484848 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3993
#4B3993
oklch(41.6% 0.142 287.8)
- #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 #4B3993, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.017
- Blueberry #464196 ΔE 0.020
- Rebecca Purple #663399 ΔE 0.051
- Cobalt #1E488F ΔE 0.066
- Twilight #4E518B ΔE 0.067
- Sapphire #2138AB ΔE 0.071
- Imperial Purple #480CA8 ΔE 0.076
- Chrysanthemum #560BAD ΔE 0.077
Use #4B3993 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.