#404D7D
Closest named color: Dusk (#4E5481). oklch(43.2% 0.081 271.2), rgb(64, 77, 125).
Aa
White text reads best on this color (8.15:1).
About this color
#404D7D is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.081 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.031 away. White text reads best on it, at 8.15:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.57:1 |
| White text | 8.15:1 |
Values
| HEX | #404D7D |
| RGB | rgb(64, 77, 125) |
| HSL | hsl(227, 32%, 37%) |
| OKLCH | oklch(43.2% 0.081 271.2) |
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 #404D7D | 8.15:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #404D7D | 2.57:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #404D7D text on white | 8.15:1 | AAA | Lc 88.1 | Fine for body text |
| #404D7D text on black | 2.57:1 | Fails | Lc -14.0 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EB
oklch(88.5% 0.026 268.8)
-
Step 300
300
#B5C0E0
oklch(81% 0.047 270.4)
-
Step 400
400
#8F9ED1
oklch(70.6% 0.077 271.6)
-
Step 500
500
#7486C5
oklch(63.2% 0.097 271.2)
-
Step 600
600
#5D6FB1
oklch(55.7% 0.105 271.1)
-
Step 700
700
#4C5C98
oklch(49% 0.098 271.1)
-
Step 800
800 (this color)
#404D7D
oklch(43.2% 0.081 271.2)
-
Step 900
900
#353F63
oklch(37.6% 0.063 271.3)
-
Step 950
950
#1F253A
oklch(26.9% 0.04 271.3)
#404D7D 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) | #3B527F | 0.015 |
| Deuteranopia (no green cones) | #354D7C | 0.015 |
| Tritanopia (no blue cones) | #29575F | 0.072 |
| Achromatopsia (no color) | #4F4F4F | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404D7D
#404D7D
oklch(43.2% 0.081 271.2)
- #614E0F
#614E0F
oklch(43.2% 0.081 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 #404D7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.031
- Twilight #4E518B ΔE 0.033
- Dusk Blue #26538D ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.041
- Light Navy #155084 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.047
- Dusty Grape #545775 ΔE 0.048
Use #404D7D 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.