#404367
Closest named color: Dark Grey Blue (#29465B). oklch(39.6% 0.061 279.6), rgb(64, 67, 103).
Aa
White text reads best on this color (9.47:1).
About this color
#404367 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.061 and its hue 280°. 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 9.47:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.21:1 |
| White text | 9.47:1 |
Values
| HEX | #404367 |
| RGB | rgb(64, 67, 103) |
| HSL | hsl(235, 23%, 33%) |
| OKLCH | oklch(39.6% 0.061 279.6) |
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 #404367 | 9.47:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #404367 | 2.21:1 | Fails | Lc 12.1 | Not readable |
| #404367 text on white | 9.47:1 | AAA | Lc 91.9 | Preferred for body text |
| #404367 text on black | 2.21:1 | Fails | Lc -10.5 | 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 900.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D5D8EA
oklch(88.5% 0.025 278.3)
-
Step 300
300
#BABEDE
oklch(80.9% 0.045 279.7)
-
Step 400
400
#979CCE
oklch(70.7% 0.073 279.9)
-
Step 500
500
#7E83C1
oklch(63.1% 0.093 279.8)
-
Step 600
600
#676CAD
oklch(55.5% 0.101 279.2)
-
Step 700
700
#565A95
oklch(49.1% 0.094 279.4)
-
Step 800
800
#464A79
oklch(42.7% 0.078 278.9)
-
Step 900
900 (this color)
#404367
oklch(39.6% 0.061 279.6)
-
Step 950
950
#222439
oklch(26.9% 0.039 279.2)
#404367 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) | #384768 | 0.016 |
| Deuteranopia (no green cones) | #354466 | 0.017 |
| Tritanopia (no blue cones) | #354A50 | 0.054 |
| Achromatopsia (no color) | #464646 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404367
#404367
oklch(39.6% 0.061 279.6)
- #4F471E
#4F471E
oklch(39.6% 0.06 98.4)
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 #404367, 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
- Charcoal #264653 ΔE 0.054
- Twilight Blue #0A437A ΔE 0.063
- Charcoal Grey #3C4142 ΔE 0.064
- Light Navy #155084 ΔE 0.065
- Dusk #4E5481 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.067
- Dark Slate Gray #2F4F4F ΔE 0.068
Use #404367 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.