#404B99
Closest named color: Blueberry (#464196). oklch(44.6% 0.127 274.1), rgb(64, 75, 153).
Aa
White text reads best on this color (7.82:1).
About this color
#404B99 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.127 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 7.82:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #404B99 |
| RGB | rgb(64, 75, 153) |
| HSL | hsl(233, 41%, 43%) |
| OKLCH | oklch(44.6% 0.127 274.1) |
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 #404B99 | 7.82:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #404B99 | 2.68:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #404B99 text on white | 7.82:1 | AAA | Lc 86.9 | Fine for body text |
| #404B99 text on black | 2.68:1 | 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
#B1BEF1
oklch(80.9% 0.074 273.5)
-
Step 400
400
#8A9AEA
oklch(70.6% 0.119 274.4)
-
Step 500
500
#6E7FE4
oklch(63% 0.152 274)
-
Step 600
600
#5866D2
oklch(55.6% 0.165 274.2)
-
Step 700
700
#4854B6
oklch(49% 0.154 274)
-
Step 800
800 (this color)
#404B99
oklch(44.6% 0.127 274.1)
-
Step 900
900
#323B75
oklch(37.6% 0.099 274)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#404B99 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) | #23569C | 0.039 |
| Deuteranopia (no green cones) | #144E97 | 0.043 |
| Tritanopia (no blue cones) | #075D6B | 0.112 |
| Achromatopsia (no color) | #525252 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404B99
#404B99
oklch(44.6% 0.127 274.1)
- #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 #404B99, 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 0.037
- Dark Slate Blue #483D8B ΔE 0.041
- Dusk Blue #26538D ΔE 0.042
- Cobalt #1E488F ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.048
- Dusk #4E5481 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.057
Use #404B99 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.