#4B4378
Closest named color: Dark Slate Blue (#483D8B). oklch(41.6% 0.087 289), rgb(75, 67, 120).
Aa
White text reads best on this color (8.84:1).
About this color
#4B4378 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.087 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 8.84:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.37:1 |
| White text | 8.84:1 |
Values
| HEX | #4B4378 |
| RGB | rgb(75, 67, 120) |
| HSL | hsl(249, 28%, 37%) |
| OKLCH | oklch(41.6% 0.087 289) |
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 #4B4378 | 8.84:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #4B4378 | 2.37:1 | Fails | Lc 13.8 | Not readable |
| #4B4378 text on white | 8.84:1 | AAA | Lc 90.2 | Preferred for body text |
| #4B4378 text on black | 2.37:1 | Fails | Lc -12.1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F3
oklch(93.5% 0.015 290.3)
-
Step 200
200
#D8D6EB
oklch(88.4% 0.029 290.2)
-
Step 300
300
#BFBCE0
oklch(80.9% 0.05 289)
-
Step 400
400
#9E99D1
oklch(70.8% 0.081 288.2)
-
Step 500
500
#887FC4
oklch(63.2% 0.103 289.1)
-
Step 600
600
#7267B1
oklch(55.7% 0.113 289)
-
Step 700
700
#5F5598
oklch(49% 0.105 288.8)
-
Step 800
800 (this color)
#4B4378
oklch(41.6% 0.087 289)
-
Step 900
900
#413B63
oklch(37.7% 0.067 289.6)
-
Step 950
950
#26233A
oklch(27.1% 0.042 289.2)
#4B4378 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) | #324B7A | 0.040 |
| Deuteranopia (no green cones) | #324977 | 0.039 |
| Tritanopia (no blue cones) | #3F4D57 | 0.073 |
| Achromatopsia (no color) | #4A4A4A | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B4378
#4B4378
oklch(41.6% 0.087 289)
- #504F07
#504F07
oklch(41.5% 0.086 108.8)
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 #4B4378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Twilight #4E518B ΔE 0.046
- Dusk #4E5481 ΔE 0.049
- Blueberry #464196 ΔE 0.052
- Dusty Grape #545775 ΔE 0.064
- Dusk Blue #26538D ΔE 0.064
- Cobalt #1E488F ΔE 0.066
- Light Navy #155084 ΔE 0.067
Use #4B4378 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.