#334F75
Closest named color: Light Navy (#155084). oklch(42.3% 0.072 256.3), rgb(51, 79, 117).
Aa
White text reads best on this color (8.34:1).
About this color
#334F75 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.072 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.034 away. White text reads best on it, at 8.34:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.51:1 |
| White text | 8.34:1 |
Values
| HEX | #334F75 |
| RGB | rgb(51, 79, 117) |
| HSL | hsl(215, 39%, 33%) |
| OKLCH | oklch(42.3% 0.072 256.3) |
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 #334F75 | 8.34:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #334F75 | 2.51:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #334F75 text on white | 8.34:1 | AAA | Lc 88.7 | Fine for body text |
| #334F75 text on black | 2.51:1 | Fails | Lc -13.5 | 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
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AFC2DC
oklch(80.8% 0.042 256.3)
-
Step 400
400
#85A3CB
oklch(70.7% 0.068 255.7)
-
Step 500
500
#678BBD
oklch(63% 0.086 256.7)
-
Step 600
600
#4E75AA
oklch(55.7% 0.094 256.3)
-
Step 700
700
#3F6292
oklch(49.2% 0.088 256.6)
-
Step 800
800 (this color)
#334F75
oklch(42.3% 0.072 256.3)
-
Step 900
900
#2D435F
oklch(37.8% 0.056 254.9)
-
Step 950
950
#1B2738
oklch(27% 0.036 257.1)
#334F75 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) | #405177 | 0.019 |
| Deuteranopia (no green cones) | #384B74 | 0.013 |
| Tritanopia (no blue cones) | #0C575D | 0.063 |
| Achromatopsia (no color) | #4E4E4E | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334F75
#334F75
oklch(42.3% 0.072 256.3)
- #64481B
#64481B
oklch(42.3% 0.072 76.3)
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 #334F75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.037
- Dusk Blue #26538D ΔE 0.040
- YInMn Blue #415A77 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.040
- Dusk #4E5481 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.050
- Twilight #4E518B ΔE 0.054
Use #334F75 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.