#404864
Closest named color: Dark Grey Blue (#29465B). oklch(40.7% 0.048 271.8), rgb(64, 72, 100).
Aa
White text reads best on this color (9.01:1).
About this color
#404864 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.048 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.037 away. White text reads best on it, at 9.01:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #404864 |
| RGB | rgb(64, 72, 100) |
| HSL | hsl(227, 22%, 32%) |
| OKLCH | oklch(40.7% 0.048 271.8) |
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 #404864 | 9.01:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #404864 | 2.32:1 | Fails | Lc 13.3 | Not readable |
| #404864 text on white | 9.01:1 | AAA | Lc 90.7 | Preferred for body text |
| #404864 text on black | 2.32:1 | Fails | Lc -11.6 | 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
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#BAC0D3
oklch(80.9% 0.028 271.8)
-
Step 400
400
#969FBE
oklch(70.6% 0.046 272.4)
-
Step 500
500
#7D88AD
oklch(63.1% 0.057 271.8)
-
Step 600
600
#667199
oklch(55.5% 0.064 272.3)
-
Step 700
700
#555F82
oklch(49.1% 0.058 271.8)
-
Step 800
800 (this color)
#404864
oklch(40.7% 0.048 271.8)
-
Step 900
900
#3A4156
oklch(37.8% 0.037 270.2)
-
Step 950
950
#222632
oklch(27% 0.023 270.4)
#404864 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) | #3F4B65 | 0.009 |
| Deuteranopia (no green cones) | #3C4863 | 0.006 |
| Tritanopia (no blue cones) | #364D52 | 0.042 |
| Achromatopsia (no color) | #494949 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404864
#404864
oklch(40.7% 0.048 271.8)
- #53492A
#53492A
oklch(40.7% 0.049 92.2)
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 #404864, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.037
- Charcoal #264653 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.054
- YInMn Blue #415A77 ΔE 0.057
- Charcoal Grey #3C4142 ΔE 0.058
- Dusk #4E5481 ΔE 0.060
- Dusty Grape #545775 ΔE 0.060
- Light Navy #155084 ΔE 0.064
Use #404864 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.