#343569
Closest named color: Prussian Blue (#1D3557). oklch(35.6% 0.089 280.1), rgb(52, 53, 105).
Aa
White text reads best on this color (11.29:1).
About this color
#343569 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.089 and its hue 280°. 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 11.29:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.85:1 |
| White text | 11.29:1 |
Values
| HEX | #343569 |
| RGB | rgb(52, 53, 105) |
| HSL | hsl(239, 34%, 31%) |
| OKLCH | oklch(35.6% 0.089 280.1) |
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 #343569 | 11.29:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #343569 | 1.85:1 | Fails | Lc 8.0 | Not readable |
| #343569 text on white | 11.29:1 | AAA | Lc 95.9 | Preferred for body text |
| #343569 text on black | 1.85:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D4D7F2
oklch(88.5% 0.037 280.6)
-
Step 300
300
#B8BDEC
oklch(81% 0.066 280)
-
Step 400
400
#9499E2
oklch(70.8% 0.106 280.3)
-
Step 500
500
#7B7ED9
oklch(63.1% 0.135 280.3)
-
Step 600
600
#6565C7
oklch(55.6% 0.148 280.4)
-
Step 700
700
#5454AC
oklch(49.2% 0.137 280.1)
-
Step 800
800
#44458B
oklch(42.7% 0.113 279.8)
-
Step 900
900 (this color)
#343569
oklch(35.6% 0.089 280.1)
-
Step 950
950
#212341
oklch(27% 0.055 279.1)
#343569 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) | #1F3D6B | 0.033 |
| Deuteranopia (no green cones) | #1B3968 | 0.033 |
| Tritanopia (no blue cones) | #21404A | 0.076 |
| Achromatopsia (no color) | #3A3A3A | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343569
#343569
oklch(35.6% 0.089 280.1)
- #453C00
#453C00
oklch(35.5% 0.074 99.8)
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 #343569, 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 0.050
- Twilight Blue #0A437A ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.064
- Marine #042E60 ΔE 0.064
- Dark Blue Grey #1F3B4D ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.069
- Space Cadet #2B2D42 ΔE 0.072
Use #343569 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.