#4F428E
Closest named color: Dark Slate Blue (#483D8B). oklch(43.2% 0.121 288.1), rgb(79, 66, 142).
Aa
White text reads best on this color (8.39:1).
About this color
#4F428E is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.121 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.019 away. White text reads best on it, at 8.39:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.50:1 |
| White text | 8.39:1 |
Values
| HEX | #4F428E |
| RGB | rgb(79, 66, 142) |
| HSL | hsl(250, 37%, 41%) |
| OKLCH | oklch(43.2% 0.121 288.1) |
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 #4F428E | 8.39:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #4F428E | 2.50:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #4F428E text on white | 8.39:1 | AAA | Lc 88.7 | Fine for body text |
| #4F428E text on black | 2.50:1 | Fails | Lc -13.5 | 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
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F2
oklch(88.6% 0.038 287.2)
-
Step 300
300
#BEBAEC
oklch(80.9% 0.07 288.4)
-
Step 400
400
#9D95E3
oklch(70.7% 0.113 287.9)
-
Step 500
500
#8778DB
oklch(63% 0.145 288.5)
-
Step 600
600
#715FC8
oklch(55.5% 0.157 288.1)
-
Step 700
700
#5F4EAD
oklch(49.1% 0.146 288)
-
Step 800
800 (this color)
#4F428E
oklch(43.2% 0.121 288.1)
-
Step 900
900
#403770
oklch(37.6% 0.095 288.2)
-
Step 950
950
#252142
oklch(27% 0.06 287.2)
#4F428E 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) | #1F4F91 | 0.064 |
| Deuteranopia (no green cones) | #1F4C8C | 0.063 |
| Tritanopia (no blue cones) | #3C5261 | 0.101 |
| Achromatopsia (no color) | #4D4D4D | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F428E
#4F428E
oklch(43.2% 0.121 288.1)
- #565400
#565400
oklch(43.4% 0.094 108.1)
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 #4F428E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.019
- Blueberry #464196 ΔE 0.020
- Twilight #4E518B ΔE 0.042
- Rebecca Purple #663399 ΔE 0.054
- Dusk #4E5481 ΔE 0.058
- Cobalt #1E488F ΔE 0.063
- Dusk Blue #26538D ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.070
Use #4F428E 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.