#3A336C
Closest named color: Prussian Blue (#1D3557). oklch(35.9% 0.096 286.2), rgb(58, 51, 108).
Aa
White text reads best on this color (11.23:1).
About this color
#3A336C is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.096 and its hue 286°. 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 11.23:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.86:1 |
| White text | 11.23:1 |
Values
| HEX | #3A336C |
| RGB | rgb(58, 51, 108) |
| HSL | hsl(247, 36%, 31%) |
| OKLCH | oklch(35.9% 0.096 286.2) |
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 #3A336C | 11.23:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #3A336C | 1.86:1 | Fails | Lc 8.1 | Not readable |
| #3A336C text on white | 11.23:1 | AAA | Lc 95.8 | Preferred for body text |
| #3A336C text on black | 1.86:1 | 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
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F3
oklch(88.5% 0.04 285.6)
-
Step 300
300
#BCBAEE
oklch(80.8% 0.073 286.4)
-
Step 400
400
#9B95E5
oklch(70.7% 0.116 286.5)
-
Step 500
500
#8479DD
oklch(63.1% 0.147 286.4)
-
Step 600
600
#6E60CB
oklch(55.6% 0.16 285.9)
-
Step 700
700
#5D4FAF
oklch(49.2% 0.147 286.3)
-
Step 800
800
#4B418E
oklch(42.7% 0.123 285.9)
-
Step 900
900 (this color)
#3A336C
oklch(35.9% 0.096 286.2)
-
Step 950
950
#242142
oklch(26.9% 0.06 285.8)
#3A336C 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) | #1A3C6E | 0.046 |
| Deuteranopia (no green cones) | #19396B | 0.046 |
| Tritanopia (no blue cones) | #2B3F4A | 0.081 |
| Achromatopsia (no color) | #3B3B3B | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A336C
#3A336C
oklch(35.9% 0.096 286.2)
- #423F00
#423F00
oklch(35.9% 0.077 106.7)
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 #3A336C, 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 0.061
- Dark Slate Blue #483D8B ΔE 0.062
- Twilight Blue #0A437A ΔE 0.064
- Marine #042E60 ΔE 0.073
- Dark Grey Blue #29465B ΔE 0.073
- Dark Blue Grey #1F3B4D ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.080
Use #3A336C 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.