#393C77
Closest named color: Dark Slate Blue (#483D8B). oklch(38.5% 0.099 278.5), rgb(57, 60, 119).
Aa
White text reads best on this color (10.06:1).
About this color
#393C77 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.099 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.042 away. White text reads best on it, at 10.06:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.08:1 |
| White text | 10.06:1 |
Values
| HEX | #393C77 |
| RGB | rgb(57, 60, 119) |
| HSL | hsl(237, 35%, 35%) |
| OKLCH | oklch(38.5% 0.099 278.5) |
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 #393C77 | 10.06:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #393C77 | 2.08:1 | Fails | Lc 10.7 | Not readable |
| #393C77 text on white | 10.06:1 | AAA | Lc 93.2 | Preferred for body text |
| #393C77 text on black | 2.08:1 | 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
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F5
oklch(88.5% 0.042 278)
-
Step 300
300
#B5BCF1
oklch(80.8% 0.075 278.7)
-
Step 400
400
#9098E9
oklch(70.6% 0.118 278.6)
-
Step 500
500
#777DE3
oklch(63.2% 0.151 278.6)
-
Step 600
600
#6164D1
oklch(55.7% 0.164 278.4)
-
Step 700
700
#5052B5
oklch(49.1% 0.153 278.3)
-
Step 800
800
#424492
oklch(42.8% 0.126 278.6)
-
Step 900
900 (this color)
#393C77
oklch(38.5% 0.099 278.5)
-
Step 950
950
#202244
oklch(26.9% 0.063 278.8)
#393C77 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) | #224479 | 0.034 |
| Deuteranopia (no green cones) | #1C4076 | 0.036 |
| Tritanopia (no blue cones) | #214953 | 0.087 |
| Achromatopsia (no color) | #424242 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393C77
#393C77
oklch(38.5% 0.099 278.5)
- #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 #393C77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.042
- Twilight Blue #0A437A ΔE 0.047
- Cobalt #1E488F ΔE 0.054
- Blueberry #464196 ΔE 0.057
- Light Navy #155084 ΔE 0.063
- Marine Blue #01386A ΔE 0.064
- Dark Grey Blue #29465B ΔE 0.066
- Dusk Blue #26538D ΔE 0.070
Use #393C77 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.