#3A4447
Closest named color: Charcoal Grey (#3C4142). oklch(37.9% 0.014 217.8), rgb(58, 68, 71).
Aa
White text reads best on this color (10.01:1).
About this color
#3A4447 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.014. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.011 away. White text reads best on it, at 10.01:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.014) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.09:1 |
| White text | 10.01:1 |
Values
| HEX | #3A4447 |
| RGB | rgb(58, 68, 71) |
| HSL | hsl(194, 10%, 25%) |
| OKLCH | oklch(37.9% 0.014 217.8) |
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 #3A4447 | 10.01:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #3A4447 | 2.09:1 | Fails | Lc 10.7 | Not readable |
| #3A4447 text on white | 10.01:1 | AAA | Lc 93.3 | Preferred for body text |
| #3A4447 text on black | 2.09:1 | Fails | Lc -9.2 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E8EAEB
oklch(93.6% 0.003 228.8)
-
Step 200
200
#D5DADC
oklch(88.5% 0.006 223.5)
-
Step 300
300
#B9C2C5
oklch(80.8% 0.011 219.6)
-
Step 400
400
#96A3A8
oklch(70.7% 0.016 222.8)
-
Step 500
500
#7C8D92
oklch(63.1% 0.021 217.3)
-
Step 600
600
#65777C
oklch(55.6% 0.023 216.4)
-
Step 700
700
#536469
oklch(49.1% 0.022 217.5)
-
Step 800
800
#445256
oklch(42.8% 0.019 216.9)
-
Step 900
900 (this color)
#3A4447
oklch(37.9% 0.014 217.8)
-
Step 950
950
#222829
oklch(27.1% 0.009 208.7)
#3A4447 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) | #424347 | 0.013 |
| Deuteranopia (no green cones) | #404247 | 0.011 |
| Tritanopia (no blue cones) | #364545 | 0.008 |
| Achromatopsia (no color) | #424242 | 0.014 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #3A4447, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.011
- Charcoal #264653 ΔE 0.030
- Onyx #343A40 ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.038
- Dark Teal #014D4E ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.052
- Dark Blue Green #005249 ΔE 0.061
Use #3A4447 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.