#3D3183
Closest named color: Dark Slate Blue (#483D8B). oklch(37.6% 0.132 284.8), rgb(61, 49, 131).
Aa
White text reads best on this color (10.68:1).
About this color
#3D3183 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.132 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.039 away. White text reads best on it, at 10.68:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.96:1 |
| White text | 10.68:1 |
Values
| HEX | #3D3183 |
| RGB | rgb(61, 49, 131) |
| HSL | hsl(249, 46%, 35%) |
| OKLCH | oklch(37.6% 0.132 284.8) |
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 #3D3183 | 10.68:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #3D3183 | 1.96:1 | Fails | Lc 9.5 | Not readable |
| #3D3183 text on white | 10.68:1 | AAA | Lc 94.4 | Preferred for body text |
| #3D3183 text on black | 1.96:1 | Fails | Lc -8.2 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E7E8FD
oklch(93.7% 0.028 283.7)
-
Step 200
200
#D4D5FD
oklch(88.5% 0.055 284.1)
-
Step 300
300
#B9B8FF
oklch(80.9% 0.1 284.6)
-
Step 400
400
#9790FE
oklch(70.7% 0.158 284.5)
-
Step 500
500
#816FFC
oklch(63.1% 0.202 284.8)
-
Step 600
600
#6D52EC
oklch(55.7% 0.22 284.7)
-
Step 700
700
#5C41CD
oklch(49.2% 0.204 284.9)
-
Step 800
800
#4A37A6
oklch(42.7% 0.17 284.5)
-
Step 900
900 (this color)
#3D3183
oklch(37.6% 0.132 284.8)
-
Step 950
950
#231E4D
oklch(27% 0.084 284.1)
#3D3183 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) | #004086 | 0.065 |
| Deuteranopia (no green cones) | #003C81 | 0.064 |
| Tritanopia (no blue cones) | #224455 | 0.110 |
| Achromatopsia (no color) | #3E3E3E | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D3183
#3D3183
oklch(37.6% 0.132 284.8)
- #484300
#484300
oklch(37.6% 0.08 104.8)
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 #3D3183, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.039
- Blueberry #464196 ΔE 0.053
- Cobalt #1E488F ΔE 0.067
- Twilight Blue #0A437A ΔE 0.070
- Indigo #4B0082 ΔE 0.075
- Sapphire #2138AB ΔE 0.076
- Imperial Purple #480CA8 ΔE 0.078
- Marine Blue #01386A ΔE 0.080
Use #3D3183 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.