#404152
Closest named color: Charcoal Grey (#3C4142). oklch(38.1% 0.029 282.3), rgb(64, 65, 82).
Aa
White text reads best on this color (10.01:1).
About this color
#404152 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.029 away. White text reads best on it, at 10.01:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.09:1 |
| White text | 10.01:1 |
Values
| HEX | #404152 |
| RGB | rgb(64, 65, 82) |
| HSL | hsl(237, 12%, 29%) |
| OKLCH | oklch(38.1% 0.029 282.3) |
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 #404152 | 10.01:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #404152 | 2.09:1 | Fails | Lc 10.7 | Not readable |
| #404152 text on white | 10.01:1 | AAA | Lc 93.3 | Preferred for body text |
| #404152 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E1
oklch(88.5% 0.012 286.1)
-
Step 300
300
#BEBFCF
oklch(80.9% 0.022 283)
-
Step 400
400
#9D9EB6
oklch(70.6% 0.035 283.6)
-
Step 500
500
#8587A4
oklch(63.2% 0.043 282)
-
Step 600
600
#6E708F
oklch(55.5% 0.048 281.8)
-
Step 700
700
#5C5E7A
oklch(49.1% 0.045 281.4)
-
Step 800
800
#4B4D63
oklch(42.7% 0.036 280.7)
-
Step 900
900 (this color)
#404152
oklch(38.1% 0.029 282.3)
-
Step 950
950
#25252F
oklch(26.9% 0.018 285.1)
#404152 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) | #3D4353 | 0.007 |
| Deuteranopia (no green cones) | #3C4252 | 0.007 |
| Tritanopia (no blue cones) | #3C4447 | 0.025 |
| Achromatopsia (no color) | #424242 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404152
#404152
oklch(38.1% 0.029 282.3)
- #454332
#454332
oklch(38% 0.028 102)
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 #404152, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.029
- Dark Grey Blue #29465B ΔE 0.034
- Charcoal #264653 ΔE 0.037
- Onyx #343A40 ΔE 0.041
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.054
- Gunmetal #293241 ΔE 0.067
- Dark Teal #014D4E ΔE 0.069
Use #404152 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.