#4E3F88
Closest named color: Dark Slate Blue (#483D8B). oklch(42.2% 0.117 289.9), rgb(78, 63, 136).
Aa
White text reads best on this color (8.78:1).
About this color
#4E3F88 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.117 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.013 away. White text reads best on it, at 8.78:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.39:1 |
| White text | 8.78:1 |
Values
| HEX | #4E3F88 |
| RGB | rgb(78, 63, 136) |
| HSL | hsl(252, 37%, 39%) |
| OKLCH | oklch(42.2% 0.117 289.9) |
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 #4E3F88 | 8.78:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #4E3F88 | 2.39:1 | Fails | Lc 14.1 | Not readable |
| #4E3F88 text on white | 8.78:1 | AAA | Lc 89.9 | Fine for body text |
| #4E3F88 text on black | 2.39:1 | Fails | Lc -12.4 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F1
oklch(88.4% 0.038 290.5)
-
Step 300
300
#BFBAEB
oklch(81% 0.069 289.4)
-
Step 400
400
#9F95E0
oklch(70.7% 0.108 289.4)
-
Step 500
500
#8978D7
oklch(63% 0.14 290)
-
Step 600
600
#745FC5
oklch(55.6% 0.153 290)
-
Step 700
700
#624EAA
oklch(49.1% 0.142 290.2)
-
Step 800
800 (this color)
#4E3F88
oklch(42.2% 0.117 289.9)
-
Step 900
900
#42376E
oklch(37.7% 0.092 290.5)
-
Step 950
950
#262140
oklch(27% 0.057 289.5)
#4E3F88 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) | #1F4C8B | 0.065 |
| Deuteranopia (no green cones) | #204986 | 0.063 |
| Tritanopia (no blue cones) | #3E4E5D | 0.096 |
| Achromatopsia (no color) | #4B4B4B | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E3F88
#4E3F88
oklch(42.2% 0.117 289.9)
- #515100
#515100
oklch(42.1% 0.092 109.8)
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 #4E3F88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.013
- Blueberry #464196 ΔE 0.026
- Twilight #4E518B ΔE 0.049
- Rebecca Purple #663399 ΔE 0.057
- Dusk #4E5481 ΔE 0.062
- Cobalt #1E488F ΔE 0.064
- Dusk Blue #26538D ΔE 0.069
- Light Navy #155084 ΔE 0.077
Use #4E3F88 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.