#3D4D4E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.7% 0.02 201.1), rgb(61, 77, 78).
Aa
White text reads best on this color (8.86:1).
About this color
#3D4D4E is a dark close to neutral grey. In OKLCH its lightness is 41%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.018 away. White text reads best on it, at 8.86:1.
| Hue family | Neutrals |
| Lightness | dark (41%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.36:1 |
| White text | 8.86:1 |
Values
| HEX | #3D4D4E |
| RGB | rgb(61, 77, 78) |
| HSL | hsl(184, 12%, 27%) |
| OKLCH | oklch(40.7% 0.02 201.1) |
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 #3D4D4E | 8.86:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #3D4D4E | 2.36:1 | Fails | Lc 13.7 | Not readable |
| #3D4D4E text on white | 8.86:1 | AAA | Lc 90.3 | Preferred for body text |
| #3D4D4E text on black | 2.36:1 | Fails | Lc -12.0 | 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
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D4DADB
oklch(88.4% 0.007 208.8)
-
Step 300
300
#B8C3C4
oklch(80.9% 0.012 203.4)
-
Step 400
400
#94A4A5
oklch(70.6% 0.018 201.3)
-
Step 500
500
#798E8F
oklch(63.1% 0.024 200.1)
-
Step 600
600
#62787A
oklch(55.6% 0.026 203.2)
-
Step 700
700
#516566
oklch(49.1% 0.024 200.2)
-
Step 800
800 (this color)
#3D4D4E
oklch(40.7% 0.02 201.1)
-
Step 900
900
#384445
oklch(37.6% 0.016 202.7)
-
Step 950
950
#212828
oklch(27% 0.01 196.6)
#3D4D4E 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) | #4B4B4E | 0.022 |
| Deuteranopia (no green cones) | #47494E | 0.019 |
| Tritanopia (no blue cones) | #384E4D | 0.008 |
| Achromatopsia (no color) | #4A4A4A | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4D4E
#3D4D4E
oklch(40.7% 0.02 201.1)
- #544545
#544545
oklch(40.6% 0.021 18)
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 #3D4D4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.018
- Charcoal Grey #3C4142 ΔE 0.038
- Charcoal #264653 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.045
- Deep Teal #00555A ΔE 0.049
- Dark Teal #014D4E ΔE 0.051
- Dark Blue Green #005249 ΔE 0.053
- Onyx #343A40 ΔE 0.063
Use #3D4D4E 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.