#393E88
Closest named color: Dark Slate Blue (#483D8B). oklch(40.2% 0.122 276.5), rgb(57, 62, 136).
Aa
White text reads best on this color (9.46:1).
About this color
#393E88 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.122 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.024 away. White text reads best on it, at 9.46:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.21:1 |
| White text | 9.46:1 |
Values
| HEX | #393E88 |
| RGB | rgb(57, 62, 136) |
| HSL | hsl(236, 41%, 38%) |
| OKLCH | oklch(40.2% 0.122 276.5) |
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 #393E88 | 9.46:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #393E88 | 2.21:1 | Fails | Lc 12.3 | Not readable |
| #393E88 text on white | 9.46:1 | AAA | Lc 91.6 | Preferred for body text |
| #393E88 text on black | 2.21:1 | Fails | Lc -10.7 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D0D7FB
oklch(88.5% 0.05 276.6)
-
Step 300
300
#B1BCFC
oklch(81% 0.091 276.6)
-
Step 400
400
#8A96FA
oklch(70.7% 0.146 276.8)
-
Step 500
500
#6F78F7
oklch(63% 0.187 276.6)
-
Step 600
600
#5A5DE6
oklch(55.5% 0.203 276.6)
-
Step 700
700
#4B4CC8
oklch(49.2% 0.188 276.6)
-
Step 800
800
#3D3FA2
oklch(42.7% 0.156 276.6)
-
Step 900
900 (this color)
#393E88
oklch(40.2% 0.122 276.5)
-
Step 950
950
#1E214B
oklch(27.1% 0.077 276.9)
#393E88 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) | #13498B | 0.044 |
| Deuteranopia (no green cones) | #014386 | 0.049 |
| Tritanopia (no blue cones) | #0C4F5D | 0.106 |
| Achromatopsia (no color) | #464646 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393E88
#393E88
oklch(40.2% 0.122 276.5)
- #554700
#554700
oklch(40% 0.082 96.2)
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 #393E88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.024
- Blueberry #464196 ΔE 0.032
- Cobalt #1E488F ΔE 0.038
- Twilight Blue #0A437A ΔE 0.053
- Dusk Blue #26538D ΔE 0.059
- Light Navy #155084 ΔE 0.059
- Twilight #4E518B ΔE 0.065
- Sapphire #2138AB ΔE 0.067
Use #393E88 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.