#374A72
Closest named color: Light Navy (#155084). oklch(41.2% 0.072 264.2), rgb(55, 74, 114).
Aa
White text reads best on this color (8.80:1).
About this color
#374A72 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.072 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.041 away. White text reads best on it, at 8.80:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.38:1 |
| White text | 8.80:1 |
Values
| HEX | #374A72 |
| RGB | rgb(55, 74, 114) |
| HSL | hsl(221, 35%, 33%) |
| OKLCH | oklch(41.2% 0.072 264.2) |
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 #374A72 | 8.80:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #374A72 | 2.38:1 | Fails | Lc 13.9 | Not readable |
| #374A72 text on white | 8.80:1 | AAA | Lc 90.0 | Preferred for body text |
| #374A72 text on black | 2.38:1 | Fails | Lc -12.2 | 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
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B3C1DC
oklch(80.9% 0.041 263.6)
-
Step 400
400
#8CA1CB
oklch(70.8% 0.066 264)
-
Step 500
500
#6F89BE
oklch(63.1% 0.086 264)
-
Step 600
600
#5772AA
oklch(55.5% 0.093 264)
-
Step 700
700
#485F92
oklch(49% 0.087 264.9)
-
Step 800
800 (this color)
#374A72
oklch(41.2% 0.072 264.2)
-
Step 900
900
#32415F
oklch(37.6% 0.055 263.6)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#374A72 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) | #3B4D74 | 0.011 |
| Deuteranopia (no green cones) | #344871 | 0.008 |
| Tritanopia (no blue cones) | #1D5358 | 0.066 |
| Achromatopsia (no color) | #4A4A4A | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374A72
#374A72
oklch(41.2% 0.072 264.2)
- #5D4716
#5D4716
oklch(41.1% 0.071 83.9)
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 #374A72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.047
- Dusk Blue #26538D ΔE 0.048
- Dusk #4E5481 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.051
- YInMn Blue #415A77 ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.053
Use #374A72 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.