#374D7A
Closest named color: Light Navy (#155084). oklch(42.4% 0.08 263.6), rgb(55, 77, 122).
Aa
White text reads best on this color (8.38:1).
About this color
#374D7A is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.080 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.033 away. White text reads best on it, at 8.38:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #374D7A |
| RGB | rgb(55, 77, 122) |
| HSL | hsl(220, 38%, 35%) |
| OKLCH | oklch(42.4% 0.08 263.6) |
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 #374D7A | 8.38:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #374D7A | 2.50:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #374D7A text on white | 8.38:1 | AAA | Lc 88.8 | Fine for body text |
| #374D7A 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0D9EB
oklch(88.4% 0.027 264.4)
-
Step 300
300
#B1C1E0
oklch(80.9% 0.047 263.7)
-
Step 400
400
#89A1D0
oklch(70.8% 0.074 263.5)
-
Step 500
500
#6B89C4
oklch(63.2% 0.096 263.2)
-
Step 600
600
#5372B0
oklch(55.6% 0.103 263.2)
-
Step 700
700
#445F98
oklch(49.1% 0.097 264)
-
Step 800
800 (this color)
#374D7A
oklch(42.4% 0.08 263.6)
-
Step 900
900
#304163
oklch(37.7% 0.063 263.4)
-
Step 950
950
#1C263A
oklch(26.9% 0.04 263.6)
#374D7A 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) | #3B517C | 0.014 |
| Deuteranopia (no green cones) | #334B79 | 0.008 |
| Tritanopia (no blue cones) | #15575D | 0.073 |
| Achromatopsia (no color) | #4E4E4E | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374D7A
#374D7A
oklch(42.4% 0.08 263.6)
- #634A0E
#634A0E
oklch(42.5% 0.08 84.1)
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 #374D7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.033
- Dusk Blue #26538D ΔE 0.035
- Deep Sea Blue #015482 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.040
- Dusk #4E5481 ΔE 0.041
- YInMn Blue #415A77 ΔE 0.045
- Twilight #4E518B ΔE 0.045
- Cobalt #1E488F ΔE 0.048
Use #374D7A 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.