#404B48
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.2% 0.015 177.3), rgb(64, 75, 72).
Aa
White text reads best on this color (9.05:1).
About this color
#404B48 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.024 away. White text reads best on it, at 9.05:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.31:1 |
| White text | 9.05:1 |
Values
| HEX | #404B48 |
| RGB | rgb(64, 75, 72) |
| HSL | hsl(164, 8%, 27%) |
| OKLCH | oklch(40.2% 0.015 177.3) |
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 #404B48 | 9.05:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #404B48 | 2.31:1 | Fails | Lc 13.1 | Not readable |
| #404B48 text on white | 9.05:1 | AAA | Lc 90.8 | Preferred for body text |
| #404B48 text on black | 2.31:1 | Fails | Lc -11.5 | 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 800.
-
Step 50
50
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D6DAD9
oklch(88.5% 0.005 179.7)
-
Step 300
300
#BBC2C0
oklch(80.8% 0.008 177.3)
-
Step 400
400
#98A4A0
oklch(70.8% 0.015 174)
-
Step 500
500
#7F8D89
oklch(63.1% 0.017 176.7)
-
Step 600
600
#687773
oklch(55.6% 0.019 177.8)
-
Step 700
700
#566460
oklch(49% 0.018 176.4)
-
Step 800
800 (this color)
#404B48
oklch(40.2% 0.015 177.3)
-
Step 900
900
#3B4441
oklch(37.7% 0.013 173.6)
-
Step 950
950
#232826
oklch(27.1% 0.008 169.8)
#404B48 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) | #4A4A48 | 0.016 |
| Deuteranopia (no green cones) | #484848 | 0.015 |
| Tritanopia (no blue cones) | #3D4B4A | 0.005 |
| Achromatopsia (no color) | #494949 | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404B48
#404B48
oklch(40.2% 0.015 177.3)
- #4F4548
#4F4548
oklch(40.2% 0.014 357.7)
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 #404B48, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.024
- Charcoal Grey #3C4142 ΔE 0.033
- Charcoal #264653 ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.050
- Dark Teal #014D4E ΔE 0.055
- Dark Blue Green #005249 ΔE 0.056
- Deep Teal #00555A ΔE 0.057
- Onyx #343A40 ΔE 0.059
Use #404B48 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.