#384C51
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.2% 0.026 214.8), rgb(56, 76, 81).
Aa
White text reads best on this color (9.04:1).
About this color
#384C51 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.016 away. White text reads best on it, at 9.04:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.32:1 |
| White text | 9.04:1 |
Values
| HEX | #384C51 |
| RGB | rgb(56, 76, 81) |
| HSL | hsl(192, 18%, 27%) |
| OKLCH | oklch(40.2% 0.026 214.8) |
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 #384C51 | 9.04:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #384C51 | 2.32:1 | Fails | Lc 13.2 | Not readable |
| #384C51 text on white | 9.04:1 | AAA | Lc 90.8 | Preferred for body text |
| #384C51 text on black | 2.32:1 | Fails | Lc -11.5 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D1DBDE
oklch(88.5% 0.012 217.6)
-
Step 300
300
#B3C4C8
oklch(80.9% 0.019 213.4)
-
Step 400
400
#8BA6AD
oklch(70.7% 0.032 215.2)
-
Step 500
500
#6E9099
oklch(63.1% 0.04 215.8)
-
Step 600
600
#557A83
oklch(55.5% 0.044 214.5)
-
Step 700
700
#45676F
oklch(49.1% 0.041 214)
-
Step 800
800
#39545B
oklch(42.7% 0.034 215.7)
-
Step 900
900 (this color)
#384C51
oklch(40.2% 0.026 214.8)
-
Step 950
950
#1D292B
oklch(27.1% 0.017 208.8)
#384C51 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) | #484B51 | 0.023 |
| Deuteranopia (no green cones) | #444751 | 0.023 |
| Tritanopia (no blue cones) | #304E4D | 0.015 |
| Achromatopsia (no color) | #494949 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #384C51
#384C51
oklch(40.2% 0.026 214.8)
- #55433F
#55433F
oklch(40.1% 0.026 32.7)
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 #384C51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.016
- Charcoal #264653 ΔE 0.032
- Dark Grey Blue #29465B ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.036
- Deep Teal #00555A ΔE 0.045
- Dark Teal #014D4E ΔE 0.045
- Dark Blue Green #005249 ΔE 0.051
- Onyx #343A40 ΔE 0.059
Use #384C51 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.