#394F50
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41% 0.027 199.7), rgb(57, 79, 80).
Aa
White text reads best on this color (8.72:1).
About this color
#394F50 is a dark close to neutral grey. In OKLCH its lightness is 41%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.013 away. White text reads best on it, at 8.72:1.
| Hue family | Neutrals |
| Lightness | dark (41%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #394F50 |
| RGB | rgb(57, 79, 80) |
| HSL | hsl(183, 17%, 27%) |
| OKLCH | oklch(41% 0.027 199.7) |
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 #394F50 | 8.72:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #394F50 | 2.40:1 | Fails | Lc 14.1 | Not readable |
| #394F50 text on white | 8.72:1 | AAA | Lc 89.9 | Fine for body text |
| #394F50 text on black | 2.40:1 | Fails | Lc -12.4 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D3DBDB
oklch(88.5% 0.009 197)
-
Step 300
300
#B5C4C4
oklch(80.9% 0.016 196.8)
-
Step 400
400
#8FA6A7
oklch(70.8% 0.026 199.8)
-
Step 500
500
#739091
oklch(63.1% 0.033 199)
-
Step 600
600
#5B7A7B
oklch(55.6% 0.035 198.7)
-
Step 700
700
#4B6768
oklch(49.2% 0.033 198.9)
-
Step 800
800 (this color)
#394F50
oklch(41% 0.027 199.7)
-
Step 900
900
#354546
oklch(37.7% 0.021 201.1)
-
Step 950
950
#1F2929
oklch(27.1% 0.014 196.4)
#394F50 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) | #4C4D50 | 0.028 |
| Deuteranopia (no green cones) | #484A50 | 0.026 |
| Tritanopia (no blue cones) | #31514F | 0.012 |
| Achromatopsia (no color) | #4B4B4B | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #394F50
#394F50
oklch(41% 0.027 199.7)
- #584544
#584544
oklch(41% 0.026 21.8)
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 #394F50, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.013
- Charcoal #264653 ΔE 0.042
- Deep Teal #00555A ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.045
- Dark Teal #014D4E ΔE 0.047
- Dark Blue Green #005249 ΔE 0.048
- Petrol #005F6A ΔE 0.061
Use #394F50 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.