#404B9A
Closest named color: Blueberry (#464196). oklch(44.7% 0.128 274.1), rgb(64, 75, 154).
Aa
White text reads best on this color (7.80:1).
About this color
#404B9A is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.128 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.026 away. White text reads best on it, at 7.80:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.69:1 |
| White text | 7.80:1 |
Values
| HEX | #404B9A |
| RGB | rgb(64, 75, 154) |
| HSL | hsl(233, 41%, 43%) |
| OKLCH | oklch(44.7% 0.128 274.1) |
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 #404B9A | 7.80:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #404B9A | 2.69:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #404B9A text on white | 7.80:1 | AAA | Lc 86.8 | Fine for body text |
| #404B9A text on black | 2.69:1 | Fails | Lc -15.2 | 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 800.
-
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
#B1BEF2
oklch(81% 0.075 273.7)
-
Step 400
400
#8A9AEB
oklch(70.7% 0.12 274.4)
-
Step 500
500
#6E7FE5
oklch(63.1% 0.154 274.1)
-
Step 600
600
#5866D3
oklch(55.6% 0.167 274.2)
-
Step 700
700
#4854B7
oklch(49.1% 0.155 274)
-
Step 800
800 (this color)
#404B9A
oklch(44.7% 0.128 274.1)
-
Step 900
900
#323B76
oklch(37.7% 0.1 274.1)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#404B9A 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) | #22569D | 0.039 |
| Deuteranopia (no green cones) | #114E98 | 0.044 |
| Tritanopia (no blue cones) | #045D6B | 0.114 |
| Achromatopsia (no color) | #525252 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404B9A
#404B9A
oklch(44.7% 0.128 274.1)
- #655300
#655300
oklch(44.7% 0.092 94.4)
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 #404B9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.026
- Twilight #4E518B ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.042
- Dusk Blue #26538D ΔE 0.043
- Cobalt #1E488F ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.048
- Dusk #4E5481 ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.058
Use #404B9A 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.