#343B93
Closest named color: Blueberry (#464196). oklch(40.1% 0.143 274.5), rgb(52, 59, 147).
Aa
White text reads best on this color (9.57:1).
About this color
#343B93 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.143 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.033 away. White text reads best on it, at 9.57:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #343B93 |
| RGB | rgb(52, 59, 147) |
| HSL | hsl(236, 48%, 39%) |
| OKLCH | oklch(40.1% 0.143 274.5) |
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 #343B93 | 9.57:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #343B93 | 2.19:1 | Fails | Lc 12.2 | Not readable |
| #343B93 text on white | 9.57:1 | AAA | Lc 91.8 | Preferred for body text |
| #343B93 text on black | 2.19:1 | Fails | Lc -10.6 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#AEBCFF
oklch(80.9% 0.096 274.9)
-
Step 400
400
#8597FF
oklch(70.8% 0.153 274.4)
-
Step 500
500
#6978FF
oklch(63.1% 0.199 274.4)
-
Step 600
600
#5256FA
oklch(55.5% 0.238 274.4)
-
Step 700
700
#4444DA
oklch(49% 0.221 274.6)
-
Step 800
800
#373AB0
oklch(42.7% 0.183 274.4)
-
Step 900
900 (this color)
#343B93
oklch(40.1% 0.143 274.5)
-
Step 950
950
#1B1F52
oklch(27% 0.092 275)
#343B93 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) | #004996 | 0.048 |
| Deuteranopia (no green cones) | #004191 | 0.042 |
| Tritanopia (no blue cones) | #005061 | 0.119 |
| Achromatopsia (no color) | #454545 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343B93
#343B93
oklch(40.1% 0.143 274.5)
- #564700
#564700
oklch(40.2% 0.082 95.2)
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 #343B93, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.033
- Dark Slate Blue #483D8B ΔE 0.035
- Cobalt #1E488F ΔE 0.039
- Sapphire #2138AB ΔE 0.046
- Twilight Blue #0A437A ΔE 0.062
- Dusk Blue #26538D ΔE 0.067
- Light Navy #155084 ΔE 0.068
- Indigo Blue #3A18B1 ΔE 0.075
Use #343B93 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.