#404145
Closest named color: Charcoal Grey (#3C4142). oklch(37.6% 0.007 274.8), rgb(64, 65, 69).
Aa
White text reads best on this color (10.19:1).
About this color
#404145 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.007. 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 10.19:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.007) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.06:1 |
| White text | 10.19:1 |
Values
| HEX | #404145 |
| RGB | rgb(64, 65, 69) |
| HSL | hsl(228, 4%, 26%) |
| OKLCH | oklch(37.6% 0.007 274.8) |
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 #404145 | 10.19:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #404145 | 2.06:1 | Fails | Lc 10.2 | Not readable |
| #404145 text on white | 10.19:1 | AAA | Lc 93.7 | Preferred for body text |
| #404145 text on black | 2.06:1 | Fails | Lc -8.8 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E9EAEB
oklch(93.7% 0.002 247.8)
-
Step 200
200
#D8D9DB
oklch(88.5% 0.003 264.5)
-
Step 300
300
#BFC0C4
oklch(80.8% 0.006 274.9)
-
Step 400
400
#9FA0A6
oklch(70.7% 0.009 278.6)
-
Step 500
500
#878990
oklch(63.1% 0.011 273.3)
-
Step 600
600
#71737A
oklch(55.6% 0.011 273.2)
-
Step 700
700
#5F6067
oklch(49.1% 0.011 279.5)
-
Step 800
800
#4D4F54
oklch(42.8% 0.009 268.4)
-
Step 900
900 (this color)
#404145
oklch(37.6% 0.007 274.8)
-
Step 950
950
#262629
oklch(27% 0.005 286)
#404145 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) | #404145 | 0.000 |
| Deuteranopia (no green cones) | #404145 | 0.000 |
| Tritanopia (no blue cones) | #3F4242 | 0.007 |
| Achromatopsia (no color) | #414141 | 0.007 |
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 #404145, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.009
- Onyx #343A40 ΔE 0.032
- Charcoal #264653 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.055
- Dark Teal #014D4E ΔE 0.064
- Gunmetal #293241 ΔE 0.065
Use #404145 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.