#343869
Closest named color: Prussian Blue (#1D3557). oklch(36.3% 0.084 277.8), rgb(52, 56, 105).
Aa
White text reads best on this color (10.96:1).
About this color
#343869 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.084 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.047 away. White text reads best on it, at 10.96:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.91:1 |
| White text | 10.96:1 |
Values
| HEX | #343869 |
| RGB | rgb(52, 56, 105) |
| HSL | hsl(235, 34%, 31%) |
| OKLCH | oklch(36.3% 0.084 277.8) |
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 #343869 | 10.96:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #343869 | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #343869 text on white | 10.96:1 | AAA | Lc 95.3 | Preferred for body text |
| #343869 text on black | 1.91:1 | Fails | Lc -7.4 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D3D7F1
oklch(88.4% 0.036 278.7)
-
Step 300
300
#B6BDEA
oklch(80.8% 0.064 277.9)
-
Step 400
400
#929ADF
oklch(70.7% 0.101 278.4)
-
Step 500
500
#7880D6
oklch(63.1% 0.129 278)
-
Step 600
600
#6268C3
oklch(55.7% 0.139 278)
-
Step 700
700
#5156A9
oklch(49.1% 0.131 277.8)
-
Step 800
800
#424789
oklch(42.8% 0.108 277.5)
-
Step 900
900 (this color)
#343869
oklch(36.3% 0.084 277.8)
-
Step 950
950
#202340
oklch(26.9% 0.054 277.6)
#343869 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) | #243F6B | 0.027 |
| Deuteranopia (no green cones) | #203A68 | 0.027 |
| Tritanopia (no blue cones) | #21424B | 0.073 |
| Achromatopsia (no color) | #3C3C3C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343869
#343869
oklch(36.3% 0.084 277.8)
- #493E00
#493E00
oklch(36.4% 0.075 97.9)
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 #343869, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.047
- Marine Blue #01386A ΔE 0.050
- Twilight Blue #0A437A ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.056
- Dark Blue Grey #1F3B4D ΔE 0.061
- Marine #042E60 ΔE 0.067
- Charcoal #264653 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.068
Use #343869 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.