#404238
Closest named color: Charcoal Grey (#3C4142). oklch(37.4% 0.017 116.4), rgb(64, 66, 56).
Aa
White text reads best on this color (10.22:1).
About this color
#404238 is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.019 away. White text reads best on it, at 10.22:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.05:1 |
| White text | 10.22:1 |
Values
| HEX | #404238 |
| RGB | rgb(64, 66, 56) |
| HSL | hsl(72, 8%, 24%) |
| OKLCH | oklch(37.4% 0.017 116.4) |
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 #404238 | 10.22:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #404238 | 2.05:1 | Fails | Lc 10.2 | Not readable |
| #404238 text on white | 10.22:1 | AAA | Lc 93.8 | Preferred for body text |
| #404238 text on black | 2.05:1 | 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
#F5F5F4
oklch(97% 0.001 106.4)
-
Step 100
100
#E9EAE7
oklch(93.5% 0.004 121.6)
-
Step 200
200
#D9DAD5
oklch(88.6% 0.007 115.7)
-
Step 300
300
#C0C2B9
oklch(81% 0.013 116.9)
-
Step 400
400
#9FA294
oklch(70.6% 0.02 116.7)
-
Step 500
500
#888C7A
oklch(63.2% 0.027 117.3)
-
Step 600
600
#727663
oklch(55.7% 0.029 117)
-
Step 700
700
#606352
oklch(49.2% 0.026 115.5)
-
Step 800
800
#4E5143
oklch(42.8% 0.023 117.2)
-
Step 900
900 (this color)
#404238
oklch(37.4% 0.017 116.4)
-
Step 950
950
#262721
oklch(27% 0.011 114.8)
#404238 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) | #444137 | 0.007 |
| Deuteranopia (no green cones) | #434138 | 0.006 |
| Tritanopia (no blue cones) | #41413F | 0.014 |
| Achromatopsia (no color) | #414141 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404238
#404238
oklch(37.4% 0.017 116.4)
- #413F49
#413F49
oklch(37.3% 0.017 294.7)
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 #404238, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.019
- Onyx #343A40 ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.048
- Charcoal #264653 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.062
- Dark Teal #014D4E ΔE 0.064
- Dark Blue Grey #1F3B4D ΔE 0.067
- Dark Olive #373E02 ΔE 0.067
Use #404238 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.