#334C73
Closest named color: Light Navy (#155084). oklch(41.5% 0.073 259), rgb(51, 76, 115).
Aa
White text reads best on this color (8.67:1).
About this color
#334C73 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.073 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.036 away. White text reads best on it, at 8.67:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.42:1 |
| White text | 8.67:1 |
Values
| HEX | #334C73 |
| RGB | rgb(51, 76, 115) |
| HSL | hsl(217, 39%, 33%) |
| OKLCH | oklch(41.5% 0.073 259) |
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 #334C73 | 8.67:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #334C73 | 2.42:1 | Fails | Lc 14.3 | Not readable |
| #334C73 text on white | 8.67:1 | AAA | Lc 89.6 | Fine for body text |
| #334C73 text on black | 2.42:1 | Fails | Lc -12.6 | 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 800.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE9
oklch(88.5% 0.023 258.4)
-
Step 300
300
#B0C2DD
oklch(80.9% 0.043 258.4)
-
Step 400
400
#87A2CB
oklch(70.7% 0.068 258.6)
-
Step 500
500
#698BBE
oklch(63.2% 0.086 258.3)
-
Step 600
600
#5174AA
oklch(55.6% 0.094 258.8)
-
Step 700
700
#426192
oklch(49.1% 0.087 259.2)
-
Step 800
800 (this color)
#334C73
oklch(41.5% 0.073 259)
-
Step 900
900
#2F4260
oklch(37.7% 0.057 259.3)
-
Step 950
950
#1C2738
oklch(27.1% 0.035 258.9)
#334C73 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) | #3D4F75 | 0.017 |
| Deuteranopia (no green cones) | #354972 | 0.009 |
| Tritanopia (no blue cones) | #10555A | 0.065 |
| Achromatopsia (no color) | #4B4B4B | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334C73
#334C73
oklch(41.5% 0.073 259)
- #614717
#614717
oklch(41.6% 0.073 79.4)
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 #334C73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.041
- Dusk Blue #26538D ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.048
- YInMn Blue #415A77 ΔE 0.048
- Twilight Blue #0A437A ΔE 0.050
- Dusk #4E5481 ΔE 0.051
Use #334C73 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.