#394378
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.09 273.6), rgb(57, 67, 120).
Aa
White text reads best on this color (9.34:1).
About this color
#394378 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.090 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.044 away. White text reads best on it, at 9.34:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #394378 |
| RGB | rgb(57, 67, 120) |
| HSL | hsl(230, 36%, 35%) |
| OKLCH | oklch(40.1% 0.09 273.6) |
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 #394378 | 9.34:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #394378 | 2.24:1 | Fails | Lc 12.5 | Not readable |
| #394378 text on white | 9.34:1 | AAA | Lc 91.4 | Preferred for body text |
| #394378 text on black | 2.24:1 | Fails | Lc -10.9 | 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 900.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B2BEED
oklch(80.8% 0.068 273.6)
-
Step 400
400
#8B9BE4
oklch(70.6% 0.109 273.9)
-
Step 500
500
#7081DC
oklch(63.1% 0.138 273.8)
-
Step 600
600
#5969CA
oklch(55.7% 0.15 273.5)
-
Step 700
700
#4957AE
oklch(49.1% 0.138 273.4)
-
Step 800
800
#3C478D
oklch(42.6% 0.116 273.8)
-
Step 900
900 (this color)
#394378
oklch(40.1% 0.09 273.6)
-
Step 950
950
#1E2442
oklch(27.1% 0.056 273.5)
#394378 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) | #2E497A | 0.021 |
| Deuteranopia (no green cones) | #274477 | 0.023 |
| Tritanopia (no blue cones) | #1F4E57 | 0.080 |
| Achromatopsia (no color) | #474747 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #394378
#394378
oklch(40.1% 0.09 273.6)
- #574600
#574600
oklch(40% 0.082 93)
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 #394378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.044
- Twilight Blue #0A437A ΔE 0.045
- Cobalt #1E488F ΔE 0.046
- Light Navy #155084 ΔE 0.048
- Dusk Blue #26538D ΔE 0.053
- Blueberry #464196 ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.059
Use #394378 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.