#374C7A
Closest named color: Light Navy (#155084). oklch(42.2% 0.081 264.6), rgb(55, 76, 122).
Aa
White text reads best on this color (8.47:1).
About this color
#374C7A is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.081 and its hue 265°. 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 8.47:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.47:1 |
| White text | 8.47:1 |
Values
| HEX | #374C7A |
| RGB | rgb(55, 76, 122) |
| HSL | hsl(221, 38%, 35%) |
| OKLCH | oklch(42.2% 0.081 264.6) |
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 #374C7A | 8.47:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #374C7A | 2.47:1 | Fails | Lc 14.9 | Not readable |
| #374C7A text on white | 8.47:1 | AAA | Lc 89.1 | Fine for body text |
| #374C7A text on black | 2.47:1 | Fails | Lc -13.1 | 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
#89A0D1
oklch(70.6% 0.077 265)
-
Step 500
500
#6C88C5
oklch(63.1% 0.098 264.9)
-
Step 600
600
#5471B1
oklch(55.5% 0.106 264.7)
-
Step 700
700
#445F98
oklch(49.1% 0.097 264)
-
Step 800
800 (this color)
#374C7A
oklch(42.2% 0.081 264.6)
-
Step 900
900
#314163
oklch(37.8% 0.062 264.4)
-
Step 950
950
#1D263A
oklch(27% 0.04 265.3)
#374C7A 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) | #3A507C | 0.013 |
| Deuteranopia (no green cones) | #324A79 | 0.009 |
| Tritanopia (no blue cones) | #15565D | 0.073 |
| Achromatopsia (no color) | #4D4D4D | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374C7A
#374C7A
oklch(42.2% 0.081 264.6)
- #62490A
#62490A
oklch(42.1% 0.082 84.5)
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 #374C7A, 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 0.036
- Deep Sea Blue #015482 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.043
- Dusk #4E5481 ΔE 0.043
- Twilight #4E518B ΔE 0.046
- Cobalt #1E488F ΔE 0.047
- YInMn Blue #415A77 ΔE 0.048
Use #374C7A 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.