#404661
Closest named color: Dark Grey Blue (#29465B). oklch(40% 0.046 274.5), rgb(64, 70, 97).
Aa
White text reads best on this color (9.26:1).
About this color
#404661 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.046 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.034 away. White text reads best on it, at 9.26:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #404661 |
| RGB | rgb(64, 70, 97) |
| HSL | hsl(229, 20%, 32%) |
| OKLCH | oklch(40% 0.046 274.5) |
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 #404661 | 9.26:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #404661 | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #404661 text on white | 9.26:1 | AAA | Lc 91.4 | Preferred for body text |
| #404661 text on black | 2.26:1 | Fails | Lc -11.0 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E6
oklch(88.4% 0.019 276.3)
-
Step 300
300
#B9BFD8
oklch(80.8% 0.036 274.9)
-
Step 400
400
#969FC4
oklch(70.8% 0.055 274.2)
-
Step 500
500
#7C87B5
oklch(63.2% 0.071 273.8)
-
Step 600
600
#6570A1
oklch(55.6% 0.077 273.9)
-
Step 700
700
#545D8A
oklch(49% 0.073 274.7)
-
Step 800
800
#454C70
oklch(42.6% 0.061 275.1)
-
Step 900
900 (this color)
#404661
oklch(40% 0.046 274.5)
-
Step 950
950
#222535
oklch(26.9% 0.03 276)
#404661 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) | #3E4962 | 0.009 |
| Deuteranopia (no green cones) | #3B4660 | 0.008 |
| Tritanopia (no blue cones) | #374B4F | 0.042 |
| Achromatopsia (no color) | #474747 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404661
#404661
oklch(40% 0.046 274.5)
- #50482A
#50482A
oklch(40.2% 0.047 94.9)
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 #404661, 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
- Charcoal #264653 ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.054
- YInMn Blue #415A77 ΔE 0.063
- Onyx #343A40 ΔE 0.065
- Dusty Grape #545775 ΔE 0.066
- Dusk #4E5481 ΔE 0.066
Use #404661 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.