#4F428D
Closest named color: Dark Slate Blue (#483D8B). oklch(43.2% 0.12 288.3), rgb(79, 66, 141).
Aa
White text reads best on this color (8.41:1).
About this color
#4F428D is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.120 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 8.41:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.49:1 |
| White text | 8.41:1 |
Values
| HEX | #4F428D |
| RGB | rgb(79, 66, 141) |
| HSL | hsl(250, 36%, 41%) |
| OKLCH | oklch(43.2% 0.12 288.3) |
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 #4F428D | 8.41:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #4F428D | 2.49:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #4F428D text on white | 8.41:1 | AAA | Lc 88.8 | Fine for body text |
| #4F428D text on black | 2.49:1 | Fails | Lc -13.4 | 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
#9E95E2
oklch(70.8% 0.111 288.6)
-
Step 500
500
#8779DA
oklch(63.2% 0.143 288.2)
-
Step 600
600
#7260C7
oklch(55.7% 0.154 288.4)
-
Step 700
700
#5F4EAC
oklch(49% 0.144 288.2)
-
Step 800
800 (this color)
#4F428D
oklch(43.2% 0.12 288.3)
-
Step 900
900
#403870
oklch(37.8% 0.093 287.6)
-
Step 950
950
#252141
oklch(27% 0.058 287.5)
#4F428D 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) | #204F90 | 0.064 |
| Deuteranopia (no green cones) | #214B8B | 0.062 |
| Tritanopia (no blue cones) | #3D5261 | 0.100 |
| Achromatopsia (no color) | #4D4D4D | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F428D
#4F428D
oklch(43.2% 0.12 288.3)
- #555300
#555300
oklch(43% 0.093 108.1)
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 #4F428D, 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 0.021
- Twilight #4E518B ΔE 0.041
- Rebecca Purple #663399 ΔE 0.055
- Dusk #4E5481 ΔE 0.057
- Cobalt #1E488F ΔE 0.063
- Dusk Blue #26538D ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.070
Use #4F428D 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.