#4B428B
Closest named color: Dark Slate Blue (#483D8B). oklch(42.7% 0.117 285.9), rgb(75, 66, 139).
Aa
White text reads best on this color (8.56:1).
About this color
#4B428B is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.117 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.015 away. White text reads best on it, at 8.56:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.45:1 |
| White text | 8.56:1 |
Values
| HEX | #4B428B |
| RGB | rgb(75, 66, 139) |
| HSL | hsl(247, 36%, 40%) |
| OKLCH | oklch(42.7% 0.117 285.9) |
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 #4B428B | 8.56:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #4B428B | 2.45:1 | Fails | Lc 14.7 | Not readable |
| #4B428B text on white | 8.56:1 | AAA | Lc 89.3 | Fine for body text |
| #4B428B text on black | 2.45:1 | Fails | Lc -13.0 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F2
oklch(88.5% 0.038 285.6)
-
Step 300
300
#BCBBEC
oklch(80.9% 0.069 285.7)
-
Step 400
400
#9B96E2
oklch(70.7% 0.11 286.2)
-
Step 500
500
#837AD9
oklch(63% 0.14 286)
-
Step 600
600
#6E62C7
oklch(55.7% 0.152 285.8)
-
Step 700
700
#5C50AC
oklch(49.1% 0.142 285.9)
-
Step 800
800 (this color)
#4B428B
oklch(42.7% 0.117 285.9)
-
Step 900
900
#3E396F
oklch(37.8% 0.09 285.4)
-
Step 950
950
#242141
oklch(26.9% 0.058 286)
#4B428B 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) | #214E8E | 0.057 |
| Deuteranopia (no green cones) | #1F4A89 | 0.057 |
| Tritanopia (no blue cones) | #375160 | 0.097 |
| Achromatopsia (no color) | #4C4C4C | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B428B
#4B428B
oklch(42.7% 0.117 285.9)
- #565100
#565100
oklch(42.6% 0.091 105.5)
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 #4B428B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.015
- Blueberry #464196 ΔE 0.020
- Twilight #4E518B ΔE 0.042
- Cobalt #1E488F ΔE 0.056
- Dusk #4E5481 ΔE 0.057
- Dusk Blue #26538D ΔE 0.061
- Rebecca Purple #663399 ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.069
Use #4B428B 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.