#4D3C90
Closest named color: Dark Slate Blue (#483D8B). oklch(42.1% 0.133 288.7), rgb(77, 60, 144).
Aa
White text reads best on this color (8.88:1).
About this color
#4D3C90 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.133 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.012 away. White text reads best on it, at 8.88:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.36:1 |
| White text | 8.88:1 |
Values
| HEX | #4D3C90 |
| RGB | rgb(77, 60, 144) |
| HSL | hsl(252, 41%, 40%) |
| OKLCH | oklch(42.1% 0.133 288.7) |
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 #4D3C90 | 8.88:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #4D3C90 | 2.36:1 | Fails | Lc 13.9 | Not readable |
| #4D3C90 text on white | 8.88:1 | AAA | Lc 90.0 | Preferred for body text |
| #4D3C90 text on black | 2.36:1 | Fails | Lc -12.2 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D5F5
oklch(88.5% 0.044 288.3)
-
Step 300
300
#BEB9F0
oklch(80.9% 0.077 288.7)
-
Step 400
400
#9E93E9
oklch(70.7% 0.124 288.7)
-
Step 500
500
#8876E2
oklch(63.2% 0.158 288.7)
-
Step 600
600
#735CD0
oklch(55.7% 0.172 288.7)
-
Step 700
700
#614AB4
oklch(49% 0.161 289.1)
-
Step 800
800 (this color)
#4D3C90
oklch(42.1% 0.133 288.7)
-
Step 900
900
#413674
oklch(37.8% 0.102 288.7)
-
Step 950
950
#262044
oklch(27% 0.065 288.9)
#4D3C90 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) | #064C93 | 0.078 |
| Deuteranopia (no green cones) | #08488E | 0.076 |
| Tritanopia (no blue cones) | #384F60 | 0.110 |
| Achromatopsia (no color) | #4A4A4A | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D3C90
#4D3C90
oklch(42.1% 0.133 288.7)
- #525100
#525100
oklch(42.2% 0.092 108.9)
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 #4D3C90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.012
- Blueberry #464196 ΔE 0.018
- Rebecca Purple #663399 ΔE 0.050
- Twilight #4E518B ΔE 0.058
- Cobalt #1E488F ΔE 0.064
- Dusk #4E5481 ΔE 0.074
- Dusk Blue #26538D ΔE 0.075
- Sapphire #2138AB ΔE 0.078
Use #4D3C90 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.