#342F66
Closest named color: Prussian Blue (#1D3557). oklch(34.1% 0.093 284.4), rgb(52, 47, 102).
Aa
White text reads best on this color (12.03:1).
About this color
#342F66 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.093 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.047 away. White text reads best on it, at 12.03:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.74:1 |
| White text | 12.03:1 |
Values
| HEX | #342F66 |
| RGB | rgb(52, 47, 102) |
| HSL | hsl(245, 37%, 29%) |
| OKLCH | oklch(34.1% 0.093 284.4) |
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 #342F66 | 12.03:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #342F66 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #342F66 text on white | 12.03:1 | AAA | Lc 97.4 | Preferred for body text |
| #342F66 text on black | 1.74:1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D5D6F3
oklch(88.4% 0.04 284)
-
Step 300
300
#BBBBED
oklch(80.9% 0.07 284.7)
-
Step 400
400
#9996E4
oklch(70.6% 0.113 284.9)
-
Step 500
500
#817BDC
oklch(63.2% 0.143 284.3)
-
Step 600
600
#6B62C9
oklch(55.6% 0.155 284.1)
-
Step 700
700
#5A50AE
oklch(49% 0.145 284.5)
-
Step 800
800
#49428D
oklch(42.6% 0.12 284.3)
-
Step 900
900 (this color)
#342F66
oklch(34.1% 0.093 284.4)
-
Step 950
950
#232242
oklch(27.1% 0.058 283.2)
#342F66 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) | #163868 | 0.043 |
| Deuteranopia (no green cones) | #143565 | 0.043 |
| Tritanopia (no blue cones) | #233B45 | 0.081 |
| Achromatopsia (no color) | #363636 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #342F66
#342F66
oklch(34.1% 0.093 284.4)
- #3E3A00
#3E3A00
oklch(34.2% 0.073 105.3)
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 #342F66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.047
- Marine Blue #01386A ΔE 0.054
- Marine #042E60 ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.066
- Twilight Blue #0A437A ΔE 0.069
- Dark Blue Grey #1F3B4D ΔE 0.070
- Gunmetal #293241 ΔE 0.072
- Midnight Blue #191970 ΔE 0.077
Use #342F66 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.