#3E2B71
Closest named color: Dark Slate Blue (#483D8B). oklch(35.2% 0.116 291.9), rgb(62, 43, 113).
Aa
White text reads best on this color (11.73:1).
About this color
#3E2B71 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.116 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.064 away. White text reads best on it, at 11.73:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.78:1 |
| White text | 11.73:1 |
Values
| HEX | #3E2B71 |
| RGB | rgb(62, 43, 113) |
| HSL | hsl(256, 45%, 31%) |
| OKLCH | oklch(35.2% 0.116 291.9) |
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 #3E2B71 | 11.73:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #3E2B71 | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #3E2B71 text on white | 11.73:1 | AAA | Lc 96.6 | Preferred for body text |
| #3E2B71 text on black | 1.78:1 | Fails | Lc 0.0 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#D9D4F7
oklch(88.5% 0.048 291.9)
-
Step 300
300
#C1B7F5
oklch(80.9% 0.087 291.7)
-
Step 400
400
#A38FEF
oklch(70.7% 0.138 292.1)
-
Step 500
500
#8E70EA
oklch(63.1% 0.177 291.9)
-
Step 600
600
#7954D8
oklch(55.5% 0.193 291.8)
-
Step 700
700
#6744BB
oklch(49.2% 0.178 292.1)
-
Step 800
800
#533998
oklch(42.8% 0.148 291.5)
-
Step 900
900 (this color)
#3E2B71
oklch(35.2% 0.116 291.9)
-
Step 950
950
#281E47
oklch(27% 0.074 292)
#3E2B71 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) | #003973 | 0.073 |
| Deuteranopia (no green cones) | #03376F | 0.072 |
| Tritanopia (no blue cones) | #303B49 | 0.094 |
| Achromatopsia (no color) | #383838 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E2B71
#3E2B71
oklch(35.2% 0.116 291.9)
- #3C3E00
#3C3E00
oklch(35% 0.077 111.8)
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 #3E2B71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.064
- Indigo #4B0082 ΔE 0.069
- Royal Purple #4B006E ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.075
- Marine Blue #01386A ΔE 0.076
- Twilight Blue #0A437A ΔE 0.081
- Marine #042E60 ΔE 0.081
- Midnight Blue #191970 ΔE 0.082
Use #3E2B71 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.