#334A78
Closest named color: Light Navy (#155084). oklch(41.3% 0.083 263.1), rgb(51, 74, 120).
Aa
White text reads best on this color (8.78:1).
About this color
#334A78 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.083 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.032 away. White text reads best on it, at 8.78:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.39:1 |
| White text | 8.78:1 |
Values
| HEX | #334A78 |
| RGB | rgb(51, 74, 120) |
| HSL | hsl(220, 40%, 34%) |
| OKLCH | oklch(41.3% 0.083 263.1) |
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 #334A78 | 8.78:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #334A78 | 2.39:1 | Fails | Lc 14.0 | Not readable |
| #334A78 text on white | 8.78:1 | AAA | Lc 89.9 | Fine for body text |
| #334A78 text on black | 2.39:1 | Fails | Lc -12.3 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0DAEB
oklch(88.6% 0.026 261.1)
-
Step 300
300
#B0C1E1
oklch(80.9% 0.049 263.1)
-
Step 400
400
#87A1D1
oklch(70.7% 0.077 262.4)
-
Step 500
500
#6A89C5
oklch(63.1% 0.098 263)
-
Step 600
600
#5272B2
oklch(55.7% 0.107 263.2)
-
Step 700
700
#425F99
oklch(49.1% 0.1 263.1)
-
Step 800
800 (this color)
#334A78
oklch(41.3% 0.083 263.1)
-
Step 900
900
#2F4164
oklch(37.7% 0.065 262.9)
-
Step 950
950
#1C263A
oklch(26.9% 0.04 263.6)
#334A78 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) | #374E7A | 0.014 |
| Deuteranopia (no green cones) | #2F4877 | 0.008 |
| Tritanopia (no blue cones) | #09545B | 0.074 |
| Achromatopsia (no color) | #4B4B4B | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334A78
#334A78
oklch(41.3% 0.083 263.1)
- #614605
#614605
oklch(41.3% 0.082 82.5)
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 #334A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.032
- Dusk Blue #26538D ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.041
- Cobalt #1E488F ΔE 0.045
- Twilight Blue #0A437A ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.052
- Dusk #4E5481 ΔE 0.052
Use #334A78 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.