#393E55
Closest named color: Dark Grey Blue (#29465B). oklch(36.9% 0.04 274.8), rgb(57, 62, 85).
Aa
White text reads best on this color (10.53:1).
About this color
#393E55 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.040 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.030 away. White text reads best on it, at 10.53:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.99:1 |
| White text | 10.53:1 |
Values
| HEX | #393E55 |
| RGB | rgb(57, 62, 85) |
| HSL | hsl(229, 20%, 28%) |
| OKLCH | oklch(36.9% 0.04 274.8) |
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 #393E55 | 10.53:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #393E55 | 1.99:1 | Fails | Lc 9.5 | Not readable |
| #393E55 text on white | 10.53:1 | AAA | Lc 94.4 | Preferred for body text |
| #393E55 text on black | 1.99:1 | Fails | Lc -8.2 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D5D8E5
oklch(88.4% 0.018 275.6)
-
Step 300
300
#BAC0D5
oklch(81% 0.03 273)
-
Step 400
400
#979FBF
oklch(70.7% 0.048 274.1)
-
Step 500
500
#7E87AF
oklch(63.1% 0.061 274.7)
-
Step 600
600
#67709B
oklch(55.5% 0.068 274.9)
-
Step 700
700
#565E84
oklch(49.1% 0.062 274.7)
-
Step 800
800
#464D6B
oklch(42.7% 0.051 273.9)
-
Step 900
900 (this color)
#393E55
oklch(36.9% 0.04 274.8)
-
Step 950
950
#232633
oklch(27.1% 0.025 274.5)
#393E55 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) | #374056 | 0.006 |
| Deuteranopia (no green cones) | #353E54 | 0.007 |
| Tritanopia (no blue cones) | #324246 | 0.035 |
| Achromatopsia (no color) | #3F3F3F | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393E55
#393E55
oklch(36.9% 0.04 274.8)
- #463F26
#463F26
oklch(36.8% 0.04 94.3)
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 #393E55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.030
- Charcoal #264653 ΔE 0.035
- Onyx #343A40 ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.052
- Gunmetal #293241 ΔE 0.055
- Midnight Green #073B4C ΔE 0.060
Use #393E55 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.