#404B74
Closest named color: Dusk (#4E5481). oklch(42.2% 0.07 271.7), rgb(64, 75, 116).
Aa
White text reads best on this color (8.47:1).
About this color
#404B74 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.070 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.039 away. White text reads best on it, at 8.47:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.47:1 |
| White text | 8.47:1 |
Values
| HEX | #404B74 |
| RGB | rgb(64, 75, 116) |
| HSL | hsl(227, 29%, 35%) |
| OKLCH | oklch(42.2% 0.07 271.7) |
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 #404B74 | 8.47:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #404B74 | 2.47:1 | Fails | Lc 14.9 | Not readable |
| #404B74 text on white | 8.47:1 | AAA | Lc 89.1 | Fine for body text |
| #404B74 text on black | 2.47:1 | Fails | Lc -13.1 | 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 800.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B7C0DC
oklch(81% 0.041 271.4)
-
Step 400
400
#929FCA
oklch(70.8% 0.065 271.6)
-
Step 500
500
#7787BD
oklch(63.2% 0.084 271.2)
-
Step 600
600
#6070A9
oklch(55.7% 0.091 271.3)
-
Step 700
700
#505D91
oklch(49.1% 0.085 272.3)
-
Step 800
800 (this color)
#404B74
oklch(42.2% 0.07 271.7)
-
Step 900
900
#37405F
oklch(37.8% 0.055 271.2)
-
Step 950
950
#202537
oklch(26.8% 0.034 272)
#404B74 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) | #3D4F76 | 0.012 |
| Deuteranopia (no green cones) | #384B73 | 0.011 |
| Tritanopia (no blue cones) | #2E535A | 0.062 |
| Achromatopsia (no color) | #4D4D4D | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404B74
#404B74
oklch(42.2% 0.07 271.7)
- #5C4C1B
#5C4C1B
oklch(42.2% 0.07 90.9)
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 #404B74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.045
- Twilight #4E518B ΔE 0.046
- Light Navy #155084 ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Dusty Grape #545775 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.054
Use #404B74 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.