#394C55
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.4% 0.028 228.6), rgb(57, 76, 85).
Aa
White text reads best on this color (8.97:1).
About this color
#394C55 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.021 away. White text reads best on it, at 8.97:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.33:1 |
| White text | 8.97:1 |
Values
| HEX | #394C55 |
| RGB | rgb(57, 76, 85) |
| HSL | hsl(199, 20%, 28%) |
| OKLCH | oklch(40.4% 0.028 228.6) |
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 #394C55 | 8.97:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #394C55 | 2.33:1 | Fails | Lc 13.4 | Not readable |
| #394C55 text on white | 8.97:1 | AAA | Lc 90.6 | Preferred for body text |
| #394C55 text on black | 2.33:1 | Fails | Lc -11.7 | 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 800.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D3DADE
oklch(88.4% 0.009 232.4)
-
Step 300
300
#B6C3C9
oklch(80.9% 0.017 227)
-
Step 400
400
#90A4AE
oklch(70.6% 0.027 229.3)
-
Step 500
500
#758E9A
oklch(63.1% 0.034 228.5)
-
Step 600
600
#5D7885
oklch(55.6% 0.037 228.9)
-
Step 700
700
#4D6570
oklch(49.2% 0.034 227.7)
-
Step 800
800 (this color)
#394C55
oklch(40.4% 0.028 228.6)
-
Step 900
900
#36444B
oklch(37.7% 0.022 229.7)
-
Step 950
950
#20282C
oklch(27.1% 0.014 229.5)
#394C55 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) | #474B55 | 0.020 |
| Deuteranopia (no green cones) | #434855 | 0.018 |
| Tritanopia (no blue cones) | #304F4F | 0.020 |
| Achromatopsia (no color) | #494949 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #394C55
#394C55
oklch(40.4% 0.028 228.6)
- #56443C
#56443C
oklch(40.3% 0.028 45.2)
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 #394C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.021
- Charcoal #264653 ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.040
- Deep Teal #00555A ΔE 0.047
- Dark Teal #014D4E ΔE 0.049
- Dark Blue Green #005249 ΔE 0.056
- Onyx #343A40 ΔE 0.061
Use #394C55 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.