#4B3383
Closest named color: Dark Slate Blue (#483D8B). oklch(39.3% 0.129 293.4), rgb(75, 51, 131).
Aa
White text reads best on this color (9.99:1).
About this color
#4B3383 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.129 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.027 away. White text reads best on it, at 9.99:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.10:1 |
| White text | 9.99:1 |
Values
| HEX | #4B3383 |
| RGB | rgb(75, 51, 131) |
| HSL | hsl(258, 44%, 36%) |
| OKLCH | oklch(39.3% 0.129 293.4) |
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 #4B3383 | 9.99:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #4B3383 | 2.10:1 | Fails | Lc 11.1 | Not readable |
| #4B3383 text on white | 9.99:1 | AAA | Lc 92.9 | Preferred for body text |
| #4B3383 text on black | 2.10:1 | Fails | Lc -9.6 | 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 900.
-
Step 50
50
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#DAD3FA
oklch(88.5% 0.054 293.5)
-
Step 300
300
#C3B5FA
oklch(80.9% 0.097 293.4)
-
Step 400
400
#A68BF7
oklch(70.6% 0.155 293.5)
-
Step 500
500
#926AF3
oklch(63.1% 0.197 293.4)
-
Step 600
600
#7E4CE2
oklch(55.6% 0.215 293.5)
-
Step 700
700
#6B3CC4
oklch(49.2% 0.199 293.6)
-
Step 800
800
#57339F
oklch(42.8% 0.165 293.5)
-
Step 900
900 (this color)
#4B3383
oklch(39.3% 0.129 293.4)
-
Step 950
950
#291C4A
oklch(27% 0.082 293.1)
#4B3383 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) | #004386 | 0.085 |
| Deuteranopia (no green cones) | #094181 | 0.082 |
| Tritanopia (no blue cones) | #3C4556 | 0.103 |
| Achromatopsia (no color) | #424242 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3383
#4B3383
oklch(39.3% 0.129 293.4)
- #464A00
#464A00
oklch(39.2% 0.088 113.3)
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 #4B3383, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.027
- Blueberry #464196 ΔE 0.045
- Rebecca Purple #663399 ΔE 0.062
- Cobalt #1E488F ΔE 0.076
- Indigo #4B0082 ΔE 0.077
- Twilight #4E518B ΔE 0.080
- Imperial Purple #480CA8 ΔE 0.083
- Twilight Blue #0A437A ΔE 0.085
Use #4B3383 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.