#3E3B8B
Closest named color: Dark Slate Blue (#483D8B). oklch(40.2% 0.129 280.5), rgb(62, 59, 139).
Aa
White text reads best on this color (9.53:1).
About this color
#3E3B8B is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.129 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.018 away. White text reads best on it, at 9.53:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #3E3B8B |
| RGB | rgb(62, 59, 139) |
| HSL | hsl(242, 40%, 39%) |
| OKLCH | oklch(40.2% 0.129 280.5) |
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 #3E3B8B | 9.53:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #3E3B8B | 2.20:1 | Fails | Lc 12.2 | Not readable |
| #3E3B8B text on white | 9.53:1 | AAA | Lc 91.8 | Preferred for body text |
| #3E3B8B text on black | 2.20:1 | Fails | Lc -10.6 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E8FD
oklch(93.6% 0.028 281.5)
-
Step 200
200
#D2D6FD
oklch(88.5% 0.054 280.6)
-
Step 300
300
#B5BAFE
oklch(80.9% 0.096 280.8)
-
Step 400
400
#9093FE
oklch(70.7% 0.154 280.5)
-
Step 500
500
#7873FC
oklch(63.1% 0.198 280.7)
-
Step 600
600
#6357EB
oklch(55.6% 0.215 280.5)
-
Step 700
700
#5345CD
oklch(49.1% 0.201 280.6)
-
Step 800
800
#433AA5
oklch(42.6% 0.166 280.5)
-
Step 900
900 (this color)
#3E3B8B
oklch(40.2% 0.129 280.5)
-
Step 950
950
#201F4D
oklch(26.9% 0.083 280.3)
#3E3B8B 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) | #02488E | 0.058 |
| Deuteranopia (no green cones) | #004289 | 0.057 |
| Tritanopia (no blue cones) | #1B4D5D | 0.110 |
| Achromatopsia (no color) | #454545 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E3B8B
#3E3B8B
oklch(40.2% 0.129 280.5)
- #534900
#534900
oklch(40.3% 0.084 100.4)
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 #3E3B8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.018
- Blueberry #464196 ΔE 0.027
- Cobalt #1E488F ΔE 0.047
- Twilight Blue #0A437A ΔE 0.064
- Sapphire #2138AB ΔE 0.065
- Dusk Blue #26538D ΔE 0.067
- Twilight #4E518B ΔE 0.068
- Light Navy #155084 ΔE 0.070
Use #3E3B8B 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.