#343C93
Closest named color: Blueberry (#464196). oklch(40.3% 0.142 274.2), rgb(52, 60, 147).
Aa
White text reads best on this color (9.48:1).
About this color
#343C93 is a dark, vivid blue. In OKLCH its lightness is 40%, 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 0.032 away. White text reads best on it, at 9.48:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #343C93 |
| RGB | rgb(52, 60, 147) |
| HSL | hsl(235, 48%, 39%) |
| OKLCH | oklch(40.3% 0.142 274.2) |
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 #343C93 | 9.48:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #343C93 | 2.21:1 | Fails | Lc 12.4 | Not readable |
| #343C93 text on white | 9.48:1 | AAA | Lc 91.6 | Preferred for body text |
| #343C93 text on black | 2.21:1 | Fails | Lc -10.8 | 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
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#B0BDF7
oklch(80.9% 0.083 274.6)
-
Step 400
400
#8899F3
oklch(70.7% 0.133 274.4)
-
Step 500
500
#6C7DEE
oklch(63.1% 0.169 274.1)
-
Step 600
600
#5663DC
oklch(55.6% 0.183 274.2)
-
Step 700
700
#4751BF
oklch(49.1% 0.171 274.3)
-
Step 800
800 (this color)
#343C93
oklch(40.3% 0.142 274.2)
-
Step 900
900
#313A7B
oklch(37.8% 0.11 274)
-
Step 950
950
#1C2248
oklch(26.9% 0.07 274)
#343C93 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) | #004A96 | 0.048 |
| Deuteranopia (no green cones) | #004291 | 0.042 |
| Tritanopia (no blue cones) | #005161 | 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°).
- #343C93
#343C93
oklch(40.3% 0.142 274.2)
- #574700
#574700
oklch(40.3% 0.083 94.2)
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 #343C93, 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 0.034
- Cobalt #1E488F ΔE 0.037
- Sapphire #2138AB ΔE 0.047
- Twilight Blue #0A437A ΔE 0.061
- Dusk Blue #26538D ΔE 0.064
- Light Navy #155084 ΔE 0.066
- Twilight #4E518B ΔE 0.075
Use #343C93 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.