#3A4347
Closest named color: Charcoal Grey (#3C4142). oklch(37.6% 0.014 226.3), rgb(58, 67, 71).
Aa
White text reads best on this color (10.12:1).
About this color
#3A4347 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 0.009 away. White text reads best on it, at 10.12:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.014) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.07:1 |
| White text | 10.12:1 |
Values
| HEX | #3A4347 |
| RGB | rgb(58, 67, 71) |
| HSL | hsl(198, 10%, 25%) |
| OKLCH | oklch(37.6% 0.014 226.3) |
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 #3A4347 | 10.12:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #3A4347 | 2.07:1 | Fails | Lc 10.4 | Not readable |
| #3A4347 text on white | 10.12:1 | AAA | Lc 93.5 | Preferred for body text |
| #3A4347 text on black | 2.07:1 | Fails | Lc -9.0 | 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
#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
#BAC2C6
oklch(80.9% 0.011 228.9)
-
Step 400
400
#96A3A9
oklch(70.7% 0.017 227.1)
-
Step 500
500
#7D8C93
oklch(63% 0.02 227.5)
-
Step 600
600
#66767E
oklch(55.5% 0.023 229.4)
-
Step 700
700
#54636A
oklch(49% 0.022 227.7)
-
Step 800
800
#455156
oklch(42.6% 0.017 224.9)
-
Step 900
900 (this color)
#3A4347
oklch(37.6% 0.014 226.3)
-
Step 950
950
#22272A
oklch(26.9% 0.009 234.1)
#3A4347 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) | #414247 | 0.011 |
| Deuteranopia (no green cones) | #3F4147 | 0.010 |
| Tritanopia (no blue cones) | #374444 | 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 #3A4347, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.009
- Charcoal #264653 ΔE 0.030
- Onyx #343A40 ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.050
- Dark Teal #014D4E ΔE 0.053
- Dark Blue Green #005249 ΔE 0.064
Use #3A4347 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.