#343C96
Closest named color: Blueberry (#464196). oklch(40.5% 0.146 274.1), rgb(52, 60, 150).
Aa
White text reads best on this color (9.40:1).
About this color
#343C96 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.146 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.032 away. White text reads best on it, at 9.40:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.23:1 |
| White text | 9.40:1 |
Values
| HEX | #343C96 |
| RGB | rgb(52, 60, 150) |
| HSL | hsl(235, 49%, 40%) |
| OKLCH | oklch(40.5% 0.146 274.1) |
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 #343C96 | 9.40:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #343C96 | 2.23:1 | Fails | Lc 12.6 | Not readable |
| #343C96 text on white | 9.40:1 | AAA | Lc 91.3 | Preferred for body text |
| #343C96 text on black | 2.23:1 | Fails | Lc -11.0 | 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 800.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8F9
oklch(88.6% 0.047 273.4)
-
Step 300
300
#AFBDF8
oklch(80.9% 0.085 274)
-
Step 400
400
#8799F5
oklch(70.8% 0.136 274)
-
Step 500
500
#6B7CF1
oklch(63.1% 0.175 274.1)
-
Step 600
600
#5562E0
oklch(55.6% 0.19 274)
-
Step 700
700
#4650C2
oklch(49.1% 0.176 274.1)
-
Step 800
800 (this color)
#343C96
oklch(40.5% 0.146 274.1)
-
Step 900
900
#30397D
oklch(37.6% 0.115 273.9)
-
Step 950
950
#1C2249
oklch(27% 0.072 274)
#343C96 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) | #004B99 | 0.049 |
| Deuteranopia (no green cones) | #004294 | 0.042 |
| Tritanopia (no blue cones) | #005263 | 0.121 |
| Achromatopsia (no color) | #464646 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343C96
#343C96
oklch(40.5% 0.146 274.1)
- #584800
#584800
oklch(40.6% 0.083 94.4)
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 #343C96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.036
- Cobalt #1E488F ΔE 0.039
- Sapphire #2138AB ΔE 0.042
- Twilight Blue #0A437A ΔE 0.064
- Dusk Blue #26538D ΔE 0.065
- Light Navy #155084 ΔE 0.069
- Indigo Blue #3A18B1 ΔE 0.073
Use #343C96 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.