#374C76
Closest named color: Light Navy (#155084). oklch(41.9% 0.075 263.3), rgb(55, 76, 118).
Aa
White text reads best on this color (8.54:1).
About this color
#374C76 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.075 and its hue 263°. 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 8.54:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.45:1 |
| White text | 8.54:1 |
Values
| HEX | #374C76 |
| RGB | rgb(55, 76, 118) |
| HSL | hsl(220, 36%, 34%) |
| OKLCH | oklch(41.9% 0.075 263.3) |
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 #374C76 | 8.54:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #374C76 | 2.45:1 | Fails | Lc 14.7 | Not readable |
| #374C76 text on white | 8.54:1 | AAA | Lc 89.3 | Fine for body text |
| #374C76 text on black | 2.45:1 | Fails | Lc -12.9 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B2C1DE
oklch(80.9% 0.044 263.6)
-
Step 400
400
#8AA1CD
oklch(70.7% 0.07 263.2)
-
Step 500
500
#6D89C0
oklch(63.1% 0.089 263.3)
-
Step 600
600
#5572AD
oklch(55.6% 0.098 263.6)
-
Step 700
700
#456094
oklch(49.2% 0.09 262.7)
-
Step 800
800 (this color)
#374C76
oklch(41.9% 0.075 263.3)
-
Step 900
900
#314161
oklch(37.7% 0.059 263.5)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#374C76 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) | #3C4F78 | 0.012 |
| Deuteranopia (no green cones) | #344A75 | 0.008 |
| Tritanopia (no blue cones) | #1A555B | 0.068 |
| Achromatopsia (no color) | #4C4C4C | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374C76
#374C76
oklch(41.9% 0.075 263.3)
- #614914
#614914
oklch(42.1% 0.075 83.3)
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 #374C76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.036
- Dusk Blue #26538D ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.042
- Dusk #4E5481 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.046
- Twilight #4E518B ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.052
Use #374C76 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.