#344F71
Closest named color: YInMn Blue (#415A77). oklch(42.2% 0.066 254.7), rgb(52, 79, 113).
Aa
White text reads best on this color (8.39:1).
About this color
#344F71 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.066 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.039 away. White text reads best on it, at 8.39:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.50:1 |
| White text | 8.39:1 |
Values
| HEX | #344F71 |
| RGB | rgb(52, 79, 113) |
| HSL | hsl(213, 37%, 32%) |
| OKLCH | oklch(42.2% 0.066 254.7) |
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 #344F71 | 8.39:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #344F71 | 2.50:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #344F71 text on white | 8.39:1 | AAA | Lc 88.8 | Fine for body text |
| #344F71 text on black | 2.50:1 | Fails | Lc -13.4 | 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 800.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE7
oklch(88.5% 0.021 254.9)
-
Step 300
300
#B0C2DA
oklch(80.8% 0.039 255.6)
-
Step 400
400
#87A3C7
oklch(70.7% 0.062 254.9)
-
Step 500
500
#698CB9
oklch(63.2% 0.079 255)
-
Step 600
600
#5075A5
oklch(55.5% 0.086 255.3)
-
Step 700
700
#40628D
oklch(49% 0.08 254.9)
-
Step 800
800 (this color)
#344F71
oklch(42.2% 0.066 254.7)
-
Step 900
900
#2F435D
oklch(37.8% 0.052 255.3)
-
Step 950
950
#1B2736
oklch(26.9% 0.033 254.4)
#344F71 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) | #425172 | 0.020 |
| Deuteranopia (no green cones) | #3A4B70 | 0.013 |
| Tritanopia (no blue cones) | #15575B | 0.059 |
| Achromatopsia (no color) | #4D4D4D | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #344F71
#344F71
oklch(42.2% 0.066 254.7)
- #634821
#634821
oklch(42.2% 0.066 74.4)
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 #344F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.039
- Light Navy #155084 ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.046
- Dusk Blue #26538D ΔE 0.046
- Dusk #4E5481 ΔE 0.048
- Dusty Grape #545775 ΔE 0.054
Use #344F71 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.