#343374
Closest named color: Marine Blue (#01386A). oklch(36% 0.109 280.1), rgb(52, 51, 116).
Aa
White text reads best on this color (11.21:1).
About this color
#343374 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.109 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.055 away. White text reads best on it, at 11.21:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.87:1 |
| White text | 11.21:1 |
Values
| HEX | #343374 |
| RGB | rgb(52, 51, 116) |
| HSL | hsl(241, 39%, 33%) |
| OKLCH | oklch(36% 0.109 280.1) |
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 #343374 | 11.21:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #343374 | 1.87:1 | Fails | Lc 8.2 | Not readable |
| #343374 text on white | 11.21:1 | AAA | Lc 95.7 | Preferred for body text |
| #343374 text on black | 1.87:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D3D7F7
oklch(88.6% 0.044 279.8)
-
Step 300
300
#B6BBF5
oklch(80.8% 0.082 280.6)
-
Step 400
400
#9196F0
oklch(70.6% 0.131 280.1)
-
Step 500
500
#7879EB
oklch(63% 0.168 280.1)
-
Step 600
600
#635FD9
oklch(55.5% 0.181 280.2)
-
Step 700
700
#534EBC
oklch(49.2% 0.168 280.3)
-
Step 800
800
#434098
oklch(42.6% 0.14 280.2)
-
Step 900
900 (this color)
#343374
oklch(36% 0.109 280.1)
-
Step 950
950
#212147
oklch(27% 0.069 280.7)
#343374 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) | #0E3D76 | 0.046 |
| Deuteranopia (no green cones) | #043873 | 0.049 |
| Tritanopia (no blue cones) | #18424E | 0.095 |
| Achromatopsia (no color) | #3B3B3B | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343374
#343374
oklch(36% 0.109 280.1)
- #463D00
#463D00
oklch(35.8% 0.074 99.9)
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 #343374, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.055
- Twilight Blue #0A437A ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.062
- Marine #042E60 ΔE 0.069
- Cobalt #1E488F ΔE 0.070
- Blueberry #464196 ΔE 0.073
- Dark Grey Blue #29465B ΔE 0.079
Use #343374 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.