#4F3779
Closest named color: Dark Slate Blue (#483D8B). oklch(39.7% 0.109 298.1), rgb(79, 55, 121).
Aa
White text reads best on this color (9.74:1).
About this color
#4F3779 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.109 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 9.74:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.15:1 |
| White text | 9.74:1 |
Values
| HEX | #4F3779 |
| RGB | rgb(79, 55, 121) |
| HSL | hsl(262, 37%, 35%) |
| OKLCH | oklch(39.7% 0.109 298.1) |
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 #4F3779 | 9.74:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #4F3779 | 2.15:1 | Fails | Lc 11.6 | Not readable |
| #4F3779 text on white | 9.74:1 | AAA | Lc 92.4 | Preferred for body text |
| #4F3779 text on black | 2.15:1 | Fails | Lc -10.1 | 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
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DCD3F4
oklch(88.4% 0.046 297.9)
-
Step 300
300
#C7B6EF
oklch(81% 0.081 298.2)
-
Step 400
400
#AB8EE7
oklch(70.8% 0.13 298)
-
Step 500
500
#976EE0
oklch(63% 0.168 298)
-
Step 600
600
#8353CD
oklch(55.6% 0.182 298.4)
-
Step 700
700
#6F43B2
oklch(49.2% 0.169 298.2)
-
Step 800
800
#5A3890
oklch(42.7% 0.14 298)
-
Step 900
900 (this color)
#4F3779
oklch(39.7% 0.109 298.1)
-
Step 950
950
#2B1E43
oklch(27.1% 0.068 298)
#4F3779 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) | #1E447B | 0.073 |
| Deuteranopia (no green cones) | #244377 | 0.068 |
| Tritanopia (no blue cones) | #464452 | 0.086 |
| Achromatopsia (no color) | #444444 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F3779
#4F3779
oklch(39.7% 0.109 298.1)
- #434D00
#434D00
oklch(39.7% 0.092 117.9)
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 #4F3779, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.053
- Rebecca Purple #663399 ΔE 0.068
- Twilight #4E518B ΔE 0.072
- Dusk #4E5481 ΔE 0.079
- Cobalt #1E488F ΔE 0.080
- Twilight Blue #0A437A ΔE 0.085
- Dusk Blue #26538D ΔE 0.089
Use #4F3779 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.