#343D94
Closest named color: Blueberry (#464196). oklch(40.6% 0.142 273.8), rgb(52, 61, 148).
Aa
White text reads best on this color (9.37:1).
About this color
#343D94 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.142 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.030 away. White text reads best on it, at 9.37:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.24:1 |
| White text | 9.37:1 |
Values
| HEX | #343D94 |
| RGB | rgb(52, 61, 148) |
| HSL | hsl(234, 48%, 39%) |
| OKLCH | oklch(40.6% 0.142 273.8) |
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 #343D94 | 9.37:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #343D94 | 2.24:1 | Fails | Lc 12.7 | Not readable |
| #343D94 text on white | 9.37:1 | AAA | Lc 91.3 | Preferred for body text |
| #343D94 text on black | 2.24:1 | Fails | Lc -11.1 | 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
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AFBDF7
oklch(80.8% 0.084 273.9)
-
Step 400
400
#8799F3
oklch(70.7% 0.133 273.9)
-
Step 500
500
#6B7DEE
oklch(63.1% 0.169 273.7)
-
Step 600
600
#5563DD
oklch(55.6% 0.185 273.8)
-
Step 700
700
#4651BF
oklch(49% 0.171 273.9)
-
Step 800
800 (this color)
#343D94
oklch(40.6% 0.142 273.8)
-
Step 900
900
#303A7B
oklch(37.7% 0.11 273.4)
-
Step 950
950
#1C2248
oklch(26.9% 0.07 274)
#343D94 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) | #004B97 | 0.048 |
| Deuteranopia (no green cones) | #004292 | 0.041 |
| Tritanopia (no blue cones) | #005262 | 0.119 |
| Achromatopsia (no color) | #464646 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343D94
#343D94
oklch(40.6% 0.142 273.8)
- #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 #343D94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.030
- Dark Slate Blue #483D8B ΔE 0.034
- Cobalt #1E488F ΔE 0.036
- Sapphire #2138AB ΔE 0.046
- Twilight Blue #0A437A ΔE 0.061
- Dusk Blue #26538D ΔE 0.062
- Light Navy #155084 ΔE 0.065
- Twilight #4E518B ΔE 0.073
Use #343D94 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.