#393D74
Closest named color: Dark Slate Blue (#483D8B). oklch(38.5% 0.092 278), rgb(57, 61, 116).
Aa
White text reads best on this color (10.03:1).
About this color
#393D74 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.092 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.046 away. White text reads best on it, at 10.03:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.09:1 |
| White text | 10.03:1 |
Values
| HEX | #393D74 |
| RGB | rgb(57, 61, 116) |
| HSL | hsl(236, 34%, 34%) |
| OKLCH | oklch(38.5% 0.092 278) |
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 #393D74 | 10.03:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #393D74 | 2.09:1 | Fails | Lc 10.8 | Not readable |
| #393D74 text on white | 10.03:1 | AAA | Lc 93.1 | Preferred for body text |
| #393D74 text on black | 2.09:1 | Fails | Lc -9.3 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D3D7F3
oklch(88.5% 0.039 279.1)
-
Step 300
300
#B5BDEE
oklch(80.9% 0.07 277.5)
-
Step 400
400
#9099E5
oklch(70.6% 0.111 278)
-
Step 500
500
#777EDD
oklch(63% 0.142 278.3)
-
Step 600
600
#6166CB
oklch(55.7% 0.153 278)
-
Step 700
700
#5054B0
oklch(49.2% 0.144 277.8)
-
Step 800
800
#41458E
oklch(42.6% 0.119 277.7)
-
Step 900
900 (this color)
#393D74
oklch(38.5% 0.092 278)
-
Step 950
950
#202342
oklch(27% 0.057 277.6)
#393D74 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) | #264576 | 0.031 |
| Deuteranopia (no green cones) | #214073 | 0.031 |
| Tritanopia (no blue cones) | #234953 | 0.081 |
| Achromatopsia (no color) | #424242 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393D74
#393D74
oklch(38.5% 0.092 278)
- #4F4400
#4F4400
oklch(38.6% 0.08 98.7)
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 #393D74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.046
- Twilight Blue #0A437A ΔE 0.047
- Cobalt #1E488F ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.060
- Blueberry #464196 ΔE 0.061
- Light Navy #155084 ΔE 0.062
- Marine Blue #01386A ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.069
Use #393D74 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.