#404C65
Closest named color: Dark Grey Blue (#29465B). oklch(41.7% 0.045 264.6), rgb(64, 76, 101).
Aa
White text reads best on this color (8.60:1).
About this color
#404C65 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.045 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.041 away. White text reads best on it, at 8.60:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.43:1 |
| White text | 8.60:1 |
Values
| HEX | #404C65 |
| RGB | rgb(64, 76, 101) |
| HSL | hsl(221, 22%, 32%) |
| OKLCH | oklch(41.7% 0.045 264.6) |
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 #404C65 | 8.60:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #404C65 | 2.43:1 | Fails | Lc 14.4 | Not readable |
| #404C65 text on white | 8.60:1 | AAA | Lc 89.6 | Fine for body text |
| #404C65 text on black | 2.43:1 | Fails | Lc -12.7 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300
#B8C1D2
oklch(80.9% 0.026 263.3)
-
Step 400
400
#94A1BB
oklch(70.8% 0.041 264.3)
-
Step 500
500
#7989AB
oklch(63% 0.055 265.1)
-
Step 600
600
#627396
oklch(55.5% 0.058 264.4)
-
Step 700
700
#516080
oklch(49% 0.055 265)
-
Step 800
800 (this color)
#404C65
oklch(41.7% 0.045 264.6)
-
Step 900
900
#384255
oklch(37.8% 0.035 263.1)
-
Step 950
950
#212631
oklch(26.9% 0.022 265.8)
#404C65 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) | #444E66 | 0.009 |
| Deuteranopia (no green cones) | #404A64 | 0.006 |
| Tritanopia (no blue cones) | #355155 | 0.039 |
| Achromatopsia (no color) | #4C4C4C | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404C65
#404C65
oklch(41.7% 0.045 264.6)
- #584A2F
#584A2F
oklch(41.6% 0.045 83.2)
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 #404C65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.041
- YInMn Blue #415A77 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.049
- Charcoal #264653 ΔE 0.051
- Dusty Grape #545775 ΔE 0.051
- Dusk #4E5481 ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.061
- Light Navy #155084 ΔE 0.063
Use #404C65 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.