#404CAB
Closest named color: Blueberry (#464196). oklch(46.1% 0.151 273.5), rgb(64, 76, 171).
Aa
White text reads best on this color (7.39:1).
About this color
#404CAB is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.151 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.042 away. White text reads best on it, at 7.39:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.83:1 |
| White text | 7.39:1 |
Values
| HEX | #404CAB |
| RGB | rgb(64, 76, 171) |
| HSL | hsl(233, 46%, 46%) |
| OKLCH | oklch(46.1% 0.151 273.5) |
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 #404CAB | 7.39:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #404CAB | 2.83:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #404CAB text on white | 7.39:1 | AAA | Lc 85.4 | Fine for body text |
| #404CAB text on black | 2.83:1 | Fails | Lc -16.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF1
oklch(80.9% 0.074 273.5)
-
Step 400
400
#899BE9
oklch(70.7% 0.116 273.2)
-
Step 500
500
#6E80E3
oklch(63.2% 0.149 273.6)
-
Step 600
600
#5767D1
oklch(55.6% 0.163 273.5)
-
Step 700
700 (this color)
#404CAB
oklch(46.1% 0.151 273.5)
-
Step 800
800
#3B4692
oklch(42.7% 0.125 273.7)
-
Step 900
900
#323C75
oklch(37.8% 0.097 273.4)
-
Step 950
950
#1D2344
oklch(26.9% 0.062 273.8)
#404CAB 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) | #015AAE | 0.051 |
| Deuteranopia (no green cones) | #0051A9 | 0.047 |
| Tritanopia (no blue cones) | #006274 | 0.128 |
| Achromatopsia (no color) | #565656 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404CAB
#404CAB
oklch(46.1% 0.151 273.5)
- #6A5600
#6A5600
oklch(46% 0.094 93.2)
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 #404CAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.042
- Twilight #4E518B ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.062
- Dusk Blue #26538D ΔE 0.062
- Blue Blue #2242C7 ΔE 0.062
- Cobalt #1E488F ΔE 0.062
Use #404CAB 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.