#3B316A
Closest named color: Prussian Blue (#1D3557). oklch(35.5% 0.096 288.6), rgb(59, 49, 106).
Aa
White text reads best on this color (11.45:1).
About this color
#3B316A is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.096 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.058 away. White text reads best on it, at 11.45:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.83:1 |
| White text | 11.45:1 |
Values
| HEX | #3B316A |
| RGB | rgb(59, 49, 106) |
| HSL | hsl(251, 37%, 30%) |
| OKLCH | oklch(35.5% 0.096 288.6) |
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 #3B316A | 11.45:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #3B316A | 1.83:1 | Fails | Lc 7.7 | Not readable |
| #3B316A text on white | 11.45:1 | AAA | Lc 96.2 | Preferred for body text |
| #3B316A text on black | 1.83:1 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D5F3
oklch(88.4% 0.041 288.6)
-
Step 300
300
#BEBAED
oklch(80.9% 0.072 288.3)
-
Step 400
400
#9E94E4
oklch(70.7% 0.116 288.8)
-
Step 500
500
#8778DC
oklch(63.1% 0.147 288.3)
-
Step 600
600
#725FC9
oklch(55.6% 0.158 288.4)
-
Step 700
700
#604DAE
oklch(49% 0.149 288.7)
-
Step 800
800
#4E408D
oklch(42.7% 0.123 288.4)
-
Step 900
900 (this color)
#3B316A
oklch(35.5% 0.096 288.6)
-
Step 950
950
#262142
oklch(27.1% 0.06 288.7)
#3B316A 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) | #193B6C | 0.050 |
| Deuteranopia (no green cones) | #193869 | 0.049 |
| Tritanopia (no blue cones) | #2E3D48 | 0.080 |
| Achromatopsia (no color) | #3A3A3A | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B316A
#3B316A
oklch(35.5% 0.096 288.6)
- #403E00
#403E00
oklch(35.4% 0.076 107.7)
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 #3B316A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.058
- Marine Blue #01386A ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.066
- Twilight Blue #0A437A ΔE 0.069
- Marine #042E60 ΔE 0.073
- Dark Grey Blue #29465B ΔE 0.076
- Dark Blue Grey #1F3B4D ΔE 0.077
- Space Cadet #2B2D42 ΔE 0.077
Use #3B316A 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.