#374A7E
Closest named color: Light Navy (#155084). oklch(41.9% 0.09 267.3), rgb(55, 74, 126).
Aa
White text reads best on this color (8.59:1).
About this color
#374A7E is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.090 and its hue 267°. 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 8.59:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.44:1 |
| White text | 8.59:1 |
Values
| HEX | #374A7E |
| RGB | rgb(55, 74, 126) |
| HSL | hsl(224, 39%, 35%) |
| OKLCH | oklch(41.9% 0.09 267.3) |
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 #374A7E | 8.59:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #374A7E | 2.44:1 | Fails | Lc 14.6 | Not readable |
| #374A7E text on white | 8.59:1 | AAA | Lc 89.4 | Fine for body text |
| #374A7E text on black | 2.44:1 | Fails | Lc -12.8 | 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
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B1C0E4
oklch(80.8% 0.054 267.4)
-
Step 400
400
#899FD6
oklch(70.6% 0.085 267.4)
-
Step 500
500
#6C87CB
oklch(63.1% 0.108 266.9)
-
Step 600
600
#556FB8
oklch(55.5% 0.118 267.7)
-
Step 700
700
#455D9E
oklch(49.1% 0.108 267.1)
-
Step 800
800 (this color)
#374A7E
oklch(41.9% 0.09 267.3)
-
Step 900
900
#314067
oklch(37.8% 0.07 267.1)
-
Step 950
950
#1D263C
oklch(27.1% 0.043 266.6)
#374A7E 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) | #354F80 | 0.014 |
| Deuteranopia (no green cones) | #2C497D | 0.014 |
| Tritanopia (no blue cones) | #11555E | 0.080 |
| Achromatopsia (no color) | #4C4C4C | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374A7E
#374A7E
oklch(41.9% 0.09 267.3)
- #614900
#614900
oklch(41.9% 0.086 87)
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 #374A7E, 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 0.034
- Cobalt #1E488F ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.044
- Twilight #4E518B ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusk #4E5481 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.049
Use #374A7E 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.