#404F77
Closest named color: Dusk (#4E5481). oklch(43.3% 0.069 267.8), rgb(64, 79, 119).
Aa
White text reads best on this color (8.06:1).
About this color
#404F77 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.069 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.030 away. White text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.60:1 |
| White text | 8.06:1 |
Values
| HEX | #404F77 |
| RGB | rgb(64, 79, 119) |
| HSL | hsl(224, 30%, 36%) |
| OKLCH | oklch(43.3% 0.069 267.8) |
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 #404F77 | 8.06:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #404F77 | 2.60:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #404F77 text on white | 8.06:1 | AAA | Lc 87.9 | Fine for body text |
| #404F77 text on black | 2.60:1 | Fails | Lc -14.3 | 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
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B5C0DC
oklch(80.8% 0.041 268.5)
-
Step 400
400
#8FA0CA
oklch(70.8% 0.065 267.6)
-
Step 500
500
#7488BC
oklch(63.2% 0.082 267.8)
-
Step 600
600
#5C71A8
oklch(55.5% 0.09 267.5)
-
Step 700
700
#4C5F90
oklch(49.2% 0.082 267.2)
-
Step 800
800 (this color)
#404F77
oklch(43.3% 0.069 267.8)
-
Step 900
900
#35405F
oklch(37.6% 0.055 268.7)
-
Step 950
950
#1F2637
oklch(27% 0.033 266.9)
#404F77 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) | #415379 | 0.012 |
| Deuteranopia (no green cones) | #3B4E76 | 0.008 |
| Tritanopia (no blue cones) | #2C575D | 0.062 |
| Achromatopsia (no color) | #505050 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404F77
#404F77
oklch(43.3% 0.069 267.8)
- #614E1F
#614E1F
oklch(43.3% 0.069 87.1)
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 #404F77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.030
- YInMn Blue #415A77 ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.040
- Twilight #4E518B ΔE 0.040
- Dusty Grape #545775 ΔE 0.041
- Dusk Blue #26538D ΔE 0.043
- Light Navy #155084 ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.050
Use #404F77 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.