#404855
Closest named color: Dark Grey Blue (#29465B). oklch(40% 0.024 260.1), rgb(64, 72, 85).
Aa
White text reads best on this color (9.22:1).
About this color
#404855 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.034 away. White text reads best on it, at 9.22:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #404855 |
| RGB | rgb(64, 72, 85) |
| HSL | hsl(217, 14%, 29%) |
| OKLCH | oklch(40% 0.024 260.1) |
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 #404855 | 9.22:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #404855 | 2.27:1 | Fails | Lc 12.7 | Not readable |
| #404855 text on white | 9.22:1 | AAA | Lc 91.3 | Preferred for body text |
| #404855 text on black | 2.27:1 | Fails | Lc -11.1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5D9E0
oklch(88.4% 0.011 261.8)
-
Step 300
300
#BAC1CD
oklch(80.9% 0.019 261.3)
-
Step 400
400
#96A1B3
oklch(70.6% 0.029 260.3)
-
Step 500
500
#7D8AA1
oklch(63.1% 0.038 261.9)
-
Step 600
600
#66748C
oklch(55.6% 0.041 261.2)
-
Step 700
700
#546177
oklch(49% 0.039 260.9)
-
Step 800
800
#455060
oklch(42.8% 0.03 257.7)
-
Step 900
900 (this color)
#404855
oklch(40% 0.024 260.1)
-
Step 950
950
#22272E
oklch(27.1% 0.015 256.8)
#404855 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) | #444956 | 0.007 |
| Deuteranopia (no green cones) | #424755 | 0.004 |
| Tritanopia (no blue cones) | #3B4B4C | 0.022 |
| Achromatopsia (no color) | #474747 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404855
#404855
oklch(40% 0.024 260.1)
- #4F4639
#4F4639
oklch(39.9% 0.024 77)
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 #404855, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.035
- Charcoal Grey #3C4142 ΔE 0.035
- Charcoal #264653 ΔE 0.036
- Onyx #343A40 ΔE 0.056
- Dark Teal #014D4E ΔE 0.061
- Deep Teal #00555A ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.066
Use #404855 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.