#344F87
Closest named color: Dusk Blue (#26538D). oklch(43.5% 0.098 263.4), rgb(52, 79, 135).
Aa
White text reads best on this color (8.03:1).
About this color
#344F87 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.098 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.018 away. White text reads best on it, at 8.03:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #344F87 |
| RGB | rgb(52, 79, 135) |
| HSL | hsl(220, 44%, 37%) |
| OKLCH | oklch(43.5% 0.098 263.4) |
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 #344F87 | 8.03:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #344F87 | 2.61:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #344F87 text on white | 8.03:1 | AAA | Lc 87.7 | Fine for body text |
| #344F87 text on black | 2.61:1 | Fails | Lc -14.5 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEF
oklch(88.6% 0.032 261.7)
-
Step 300
300
#AEC1E7
oklch(80.9% 0.058 264.2)
-
Step 400
400
#83A0DB
oklch(70.7% 0.093 264)
-
Step 500
500
#6488D1
oklch(63.2% 0.118 263.4)
-
Step 600
600
#4B70BE
oklch(55.5% 0.129 263.6)
-
Step 700
700
#3C5EA4
oklch(49.2% 0.119 263.2)
-
Step 800
800 (this color)
#344F87
oklch(43.5% 0.098 263.4)
-
Step 900
900
#2C406A
oklch(37.6% 0.077 263.8)
-
Step 950
950
#1A263E
oklch(27% 0.048 263.3)
#344F87 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) | #375489 | 0.016 |
| Deuteranopia (no green cones) | #2C4D86 | 0.012 |
| Tritanopia (no blue cones) | #005C64 | 0.087 |
| Achromatopsia (no color) | #505050 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #344F87
#344F87
oklch(43.5% 0.098 263.4)
- #684C00
#684C00
oklch(43.5% 0.089 84.2)
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 #344F87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.018
- Light Navy #155084 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.032
- Cobalt #1E488F ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.037
- Twilight #4E518B ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.039
- Dusk #4E5481 ΔE 0.041
Use #344F87 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.