#4F3379
Closest named color: Dark Slate Blue (#483D8B). oklch(39% 0.116 299.5), rgb(79, 51, 121).
Aa
White text reads best on this color (10.08:1).
About this color
#4F3379 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.116 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 10.08:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.08:1 |
| White text | 10.08:1 |
Values
| HEX | #4F3379 |
| RGB | rgb(79, 51, 121) |
| HSL | hsl(264, 41%, 34%) |
| OKLCH | oklch(39% 0.116 299.5) |
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 #4F3379 | 10.08:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #4F3379 | 2.08:1 | Fails | Lc 10.8 | Not readable |
| #4F3379 text on white | 10.08:1 | AAA | Lc 93.1 | Preferred for body text |
| #4F3379 text on black | 2.08:1 | Fails | Lc -9.3 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#ECE6F9
oklch(93.5% 0.026 300.3)
-
Step 200
200
#DDD3F5
oklch(88.5% 0.047 298.9)
-
Step 300
300
#C8B5F1
oklch(81% 0.086 299)
-
Step 400
400
#AE8BEA
oklch(70.7% 0.139 299.8)
-
Step 500
500
#9A6BE3
oklch(63% 0.177 299.4)
-
Step 600
600
#864FD1
oklch(55.6% 0.192 299.6)
-
Step 700
700
#723FB5
oklch(49.1% 0.179 299.6)
-
Step 800
800
#5C3593
oklch(42.7% 0.148 299.1)
-
Step 900
900 (this color)
#4F3379
oklch(39% 0.116 299.5)
-
Step 950
950
#2C1C45
oklch(26.9% 0.075 299.4)
#4F3379 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) | #15427B | 0.083 |
| Deuteranopia (no green cones) | #1F4177 | 0.076 |
| Tritanopia (no blue cones) | #464151 | 0.088 |
| Achromatopsia (no color) | #424242 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F3379
#4F3379
oklch(39% 0.116 299.5)
- #404C00
#404C00
oklch(39.2% 0.093 119.5)
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 #4F3379, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Blueberry #464196 ΔE 0.058
- Rebecca Purple #663399 ΔE 0.068
- Twilight #4E518B ΔE 0.081
- Indigo #4B0082 ΔE 0.082
- Cobalt #1E488F ΔE 0.085
- Royal Purple #4B006E ΔE 0.088
- Dusk #4E5481 ΔE 0.089
Use #4F3379 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.