#3D4952
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.8% 0.022 240.5), rgb(61, 73, 82).
Aa
White text reads best on this color (9.23:1).
About this color
#3D4952 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.027 away. White text reads best on it, at 9.23:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #3D4952 |
| RGB | rgb(61, 73, 82) |
| HSL | hsl(206, 15%, 28%) |
| OKLCH | oklch(39.8% 0.022 240.5) |
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 #3D4952 | 9.23:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #3D4952 | 2.27:1 | Fails | Lc 12.6 | Not readable |
| #3D4952 text on white | 9.23:1 | AAA | Lc 91.3 | Preferred for body text |
| #3D4952 text on black | 2.27:1 | Fails | Lc -11.0 | 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 900.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DADF
oklch(88.5% 0.009 242.9)
-
Step 300
300
#B8C2CA
oklch(80.9% 0.016 241.8)
-
Step 400
400
#93A3B0
oklch(70.7% 0.026 242.5)
-
Step 500
500
#788D9C
oklch(63.2% 0.033 239.2)
-
Step 600
600
#617787
oklch(55.7% 0.036 239.9)
-
Step 700
700
#506472
oklch(49.2% 0.033 238.9)
-
Step 800
800
#41515D
oklch(42.6% 0.028 240.7)
-
Step 900
900 (this color)
#3D4952
oklch(39.8% 0.022 240.5)
-
Step 950
950
#21272D
oklch(26.9% 0.014 248.4)
#3D4952 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) | #454952 | 0.012 |
| Deuteranopia (no green cones) | #424652 | 0.012 |
| Tritanopia (no blue cones) | #374B4C | 0.017 |
| Achromatopsia (no color) | #474747 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4952
#3D4952
oklch(39.8% 0.022 240.5)
- #50453C
#50453C
oklch(39.9% 0.021 61.5)
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 #3D4952, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.027
- Charcoal Grey #3C4142 ΔE 0.032
- Charcoal #264653 ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.033
- Onyx #343A40 ΔE 0.054
- Dark Teal #014D4E ΔE 0.054
- Deep Teal #00555A ΔE 0.055
- Dark Blue Green #005249 ΔE 0.062
Use #3D4952 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.