#393D55
Closest named color: Dark Grey Blue (#29465B). oklch(36.7% 0.042 276.8), rgb(57, 61, 85).
Aa
White text reads best on this color (10.64:1).
About this color
#393D55 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.042 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.032 away. White text reads best on it, at 10.64:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.97:1 |
| White text | 10.64:1 |
Values
| HEX | #393D55 |
| RGB | rgb(57, 61, 85) |
| HSL | hsl(231, 20%, 28%) |
| OKLCH | oklch(36.7% 0.042 276.8) |
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 #393D55 | 10.64:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #393D55 | 1.97:1 | Fails | Lc 9.2 | Not readable |
| #393D55 text on white | 10.64:1 | AAA | Lc 94.7 | Preferred for body text |
| #393D55 text on black | 1.97:1 | Fails | Lc -7.9 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E5
oklch(88.5% 0.018 279)
-
Step 300
300
#BBBFD5
oklch(80.8% 0.031 277.5)
-
Step 400
400
#989EC0
oklch(70.6% 0.05 277.2)
-
Step 500
500
#7F86B0
oklch(63% 0.064 277.1)
-
Step 600
600
#69709C
oklch(55.7% 0.069 276.9)
-
Step 700
700
#575D85
oklch(49% 0.065 277.2)
-
Step 800
800
#474C6C
oklch(42.6% 0.054 277)
-
Step 900
900 (this color)
#393D55
oklch(36.7% 0.042 276.8)
-
Step 950
950
#232533
oklch(26.9% 0.026 278.2)
#393D55 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) | #363F56 | 0.007 |
| Deuteranopia (no green cones) | #343D54 | 0.008 |
| Tritanopia (no blue cones) | #324145 | 0.037 |
| Achromatopsia (no color) | #3E3E3E | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393D55
#393D55
oklch(36.7% 0.042 276.8)
- #453F25
#453F25
oklch(36.7% 0.041 96.7)
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 #393D55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.032
- Onyx #343A40 ΔE 0.038
- Charcoal #264653 ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.050
- Gunmetal #293241 ΔE 0.054
- Midnight Green #073B4C ΔE 0.059
Use #393D55 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.