#4B3398
Closest named color: Dark Slate Blue (#483D8B). oklch(41% 0.157 288.4), rgb(75, 51, 152).
Aa
White text reads best on this color (9.43:1).
About this color
#4B3398 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.157 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.033 away. White text reads best on it, at 9.43:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.22:1 |
| White text | 9.43:1 |
Values
| HEX | #4B3398 |
| RGB | rgb(75, 51, 152) |
| HSL | hsl(254, 50%, 40%) |
| OKLCH | oklch(41% 0.157 288.4) |
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 #4B3398 | 9.43:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #4B3398 | 2.22:1 | Fails | Lc 12.7 | Not readable |
| #4B3398 text on white | 9.43:1 | AAA | Lc 91.3 | Preferred for body text |
| #4B3398 text on black | 2.22:1 | Fails | Lc -11.0 | 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
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D7D4FA
oklch(88.4% 0.052 288.9)
-
Step 300
300
#BEB7F9
oklch(80.8% 0.093 289)
-
Step 400
400
#9E90F6
oklch(70.8% 0.146 288.4)
-
Step 500
500
#8870F2
oklch(63.1% 0.187 288.3)
-
Step 600
600
#7454E0
oklch(55.6% 0.203 288.5)
-
Step 700
700
#6243C3
oklch(49.2% 0.189 288.6)
-
Step 800
800 (this color)
#4B3398
oklch(41% 0.157 288.4)
-
Step 900
900
#41327D
oklch(37.7% 0.122 288.3)
-
Step 950
950
#261E49
oklch(27% 0.077 288.7)
#4B3398 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) | #00489B | 0.083 |
| Deuteranopia (no green cones) | #004396 | 0.081 |
| Tritanopia (no blue cones) | #304C61 | 0.128 |
| Achromatopsia (no color) | #464646 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3398
#4B3398
oklch(41% 0.157 288.4)
- #4F4E00
#4F4E00
oklch(41.1% 0.089 108.9)
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 #4B3398, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.033
- Blueberry #464196 ΔE 0.033
- Rebecca Purple #663399 ΔE 0.051
- Imperial Purple #480CA8 ΔE 0.060
- Chrysanthemum #560BAD ΔE 0.062
- Sapphire #2138AB ΔE 0.067
- Indigo Blue #3A18B1 ΔE 0.068
- Cobalt #1E488F ΔE 0.075
Use #4B3398 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.