#4F3171
Closest named color: Dark Slate Blue (#483D8B). oklch(38.1% 0.108 303.3), rgb(79, 49, 113).
Aa
White text reads best on this color (10.44:1).
About this color
#4F3171 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.108 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.051 away. White text reads best on it, at 10.44:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.01:1 |
| White text | 10.44:1 |
Values
| HEX | #4F3171 |
| RGB | rgb(79, 49, 113) |
| HSL | hsl(268, 40%, 32%) |
| OKLCH | oklch(38.1% 0.108 303.3) |
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 #4F3171 | 10.44:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #4F3171 | 2.01:1 | Fails | Lc 9.9 | Not readable |
| #4F3171 text on white | 10.44:1 | AAA | Lc 94.0 | Preferred for body text |
| #4F3171 text on black | 2.01:1 | Fails | Lc -8.6 | 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 900.
-
Step 50
50
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EDE6F7
oklch(93.5% 0.024 304.5)
-
Step 200
200
#DFD2F2
oklch(88.4% 0.046 303.9)
-
Step 300
300
#CBB4EC
oklch(80.8% 0.081 303.4)
-
Step 400
400
#B18BE3
oklch(70.6% 0.131 303.1)
-
Step 500
500
#9F6CDA
oklch(63.1% 0.165 303.4)
-
Step 600
600
#8A51C8
oklch(55.7% 0.18 303.1)
-
Step 700
700
#7540AD
oklch(49% 0.168 303.1)
-
Step 800
800
#5F368C
oklch(42.7% 0.139 302.9)
-
Step 900
900 (this color)
#4F3171
oklch(38.1% 0.108 303.3)
-
Step 950
950
#2E1D41
oklch(27.1% 0.067 304.1)
#4F3171 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) | #1A3F73 | 0.082 |
| Deuteranopia (no green cones) | #243F6F | 0.074 |
| Tritanopia (no blue cones) | #493D4C | 0.080 |
| Achromatopsia (no color) | #404040 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F3171
#4F3171
oklch(38.1% 0.108 303.3)
- #394A00
#394A00
oklch(38.1% 0.094 123.3)
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 #4F3171, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Blueberry #464196 ΔE 0.071
- Grape Purple #5D1451 ΔE 0.079
- Rebecca Purple #663399 ΔE 0.079
- Indigo #4B0082 ΔE 0.083
- Royal Purple #4B006E ΔE 0.083
- Twilight #4E518B ΔE 0.090
- Twilight Blue #0A437A ΔE 0.092
Use #4F3171 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.