#4B3798
Closest named color: Blueberry (#464196). oklch(41.7% 0.151 287.4), rgb(75, 55, 152).
Aa
White text reads best on this color (9.13:1).
About this color
#4B3798 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.151 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.025 away. White text reads best on it, at 9.13:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.29:1 |
| White text | 9.13:1 |
Values
| HEX | #4B3798 |
| RGB | rgb(75, 55, 152) |
| HSL | hsl(252, 47%, 41%) |
| OKLCH | oklch(41.7% 0.151 287.4) |
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 #4B3798 | 9.13:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #4B3798 | 2.29:1 | Fails | Lc 13.4 | Not readable |
| #4B3798 text on white | 9.13:1 | AAA | Lc 90.6 | Preferred for body text |
| #4B3798 text on black | 2.29:1 | 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
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D6D5F9
oklch(88.5% 0.049 286.6)
-
Step 300
300
#BDB8F7
oklch(80.9% 0.088 287.9)
-
Step 400
400
#9C91F3
oklch(70.7% 0.141 287.4)
-
Step 500
500
#8672EF
oklch(63.1% 0.181 287.4)
-
Step 600
600
#7156DD
oklch(55.5% 0.197 287.4)
-
Step 700
700
#5F46C0
oklch(49.1% 0.182 287.1)
-
Step 800
800 (this color)
#4B3798
oklch(41.7% 0.151 287.4)
-
Step 900
900
#40337C
oklch(37.7% 0.119 287.5)
-
Step 950
950
#251F48
oklch(27% 0.074 287.1)
#4B3798 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) | #004A9B | 0.080 |
| Deuteranopia (no green cones) | #004596 | 0.078 |
| Tritanopia (no blue cones) | #304E62 | 0.125 |
| Achromatopsia (no color) | #484848 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3798
#4B3798
oklch(41.7% 0.151 287.4)
- #524F00
#524F00
oklch(41.7% 0.089 107.2)
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 #4B3798, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.025
- Dark Slate Blue #483D8B ΔE 0.027
- Rebecca Purple #663399 ΔE 0.050
- Sapphire #2138AB ΔE 0.067
- Imperial Purple #480CA8 ΔE 0.068
- Chrysanthemum #560BAD ΔE 0.069
- Cobalt #1E488F ΔE 0.069
- Twilight #4E518B ΔE 0.074
Use #4B3798 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.