#4F3388
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.136 294.7), rgb(79, 51, 136).
Aa
White text reads best on this color (9.71:1).
About this color
#4F3388 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.136 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.026 away. White text reads best on it, at 9.71:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #4F3388 |
| RGB | rgb(79, 51, 136) |
| HSL | hsl(260, 45%, 37%) |
| OKLCH | oklch(40.1% 0.136 294.7) |
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 #4F3388 | 9.71:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #4F3388 | 2.16:1 | Fails | Lc 11.8 | Not readable |
| #4F3388 text on white | 9.71:1 | AAA | Lc 92.1 | Preferred for body text |
| #4F3388 text on black | 2.16:1 | Fails | Lc -10.3 | 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EBE6FC
oklch(93.5% 0.03 296.2)
-
Step 200
200
#DBD2FB
oklch(88.4% 0.057 295.3)
-
Step 300
300
#C5B4FC
oklch(81% 0.102 294.9)
-
Step 400
400
#A989FA
oklch(70.7% 0.162 295)
-
Step 500
500
#9566F7
oklch(63% 0.207 294.7)
-
Step 600
600
#8147E6
oklch(55.6% 0.226 294.6)
-
Step 700
700
#6E36C8
oklch(49.1% 0.211 294.9)
-
Step 800
800
#592FA2
oklch(42.7% 0.174 294.6)
-
Step 900
900 (this color)
#4F3388
oklch(40.1% 0.136 294.7)
-
Step 950
950
#2A1B4B
oklch(27% 0.085 294.4)
#4F3388 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) | #00458B | 0.091 |
| Deuteranopia (no green cones) | #044386 | 0.089 |
| Tritanopia (no blue cones) | #404658 | 0.108 |
| Achromatopsia (no color) | #444444 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F3388
#4F3388
oklch(40.1% 0.136 294.7)
- #474D00
#474D00
oklch(40.1% 0.091 114.8)
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 #4F3388, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.026
- Blueberry #464196 ΔE 0.041
- Rebecca Purple #663399 ΔE 0.051
- Twilight #4E518B ΔE 0.078
- Indigo #4B0082 ΔE 0.078
- Imperial Purple #480CA8 ΔE 0.079
- Cobalt #1E488F ΔE 0.079
- Chrysanthemum #560BAD ΔE 0.079
Use #4F3388 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.