#4F3993
Closest named color: Dark Slate Blue (#483D8B). oklch(42% 0.142 290.2), rgb(79, 57, 147).
Aa
White text reads best on this color (8.97:1).
About this color
#4F3993 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.142 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.020 away. White text reads best on it, at 8.97:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.33:1 |
| White text | 8.97:1 |
Values
| HEX | #4F3993 |
| RGB | rgb(79, 57, 147) |
| HSL | hsl(255, 44%, 40%) |
| OKLCH | oklch(42% 0.142 290.2) |
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 #4F3993 | 8.97:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #4F3993 | 2.33:1 | Fails | Lc 13.7 | Not readable |
| #4F3993 text on white | 8.97:1 | AAA | Lc 90.2 | Preferred for body text |
| #4F3993 text on black | 2.33:1 | Fails | Lc -12.0 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7F9
oklch(93.5% 0.024 291)
-
Step 200
200
#D8D5F6
oklch(88.6% 0.045 289.6)
-
Step 300
300
#BFB8F3
oklch(80.9% 0.083 289.8)
-
Step 400
400
#A091ED
oklch(70.7% 0.133 290.1)
-
Step 500
500
#8B73E7
oklch(63.2% 0.169 290.2)
-
Step 600
600
#7658D5
oklch(55.6% 0.184 290.2)
-
Step 700
700
#6347B9
oklch(49.1% 0.172 289.9)
-
Step 800
800 (this color)
#4F3993
oklch(42% 0.142 290.2)
-
Step 900
900
#433477
oklch(37.8% 0.11 290.5)
-
Step 950
950
#271F46
oklch(27.1% 0.07 290.3)
#4F3993 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) | #004B96 | 0.085 |
| Deuteranopia (no green cones) | #004791 | 0.084 |
| Tritanopia (no blue cones) | #3A4D60 | 0.115 |
| Achromatopsia (no color) | #494949 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F3993
#4F3993
oklch(42% 0.142 290.2)
- #505100
#505100
oklch(42% 0.092 110.6)
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 #4F3993, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.020
- Blueberry #464196 ΔE 0.023
- Rebecca Purple #663399 ΔE 0.044
- Twilight #4E518B ΔE 0.066
- Cobalt #1E488F ΔE 0.071
- Chrysanthemum #560BAD ΔE 0.076
- Sapphire #2138AB ΔE 0.077
- Imperial Purple #480CA8 ΔE 0.078
Use #4F3993 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.