#404BA9
Closest named color: Blueberry (#464196). oklch(45.8% 0.15 273.9), rgb(64, 75, 169).
Aa
White text reads best on this color (7.50:1).
About this color
#404BA9 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.150 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.038 away. White text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.79:1 |
| White text | 7.50:1 |
Values
| HEX | #404BA9 |
| RGB | rgb(64, 75, 169) |
| HSL | hsl(234, 45%, 46%) |
| OKLCH | oklch(45.8% 0.15 273.9) |
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 #404BA9 | 7.50:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #404BA9 | 2.79:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #404BA9 text on white | 7.50:1 | AAA | Lc 85.8 | Fine for body text |
| #404BA9 text on black | 2.79:1 | Fails | Lc -16.3 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8FA
oklch(88.6% 0.048 273.7)
-
Step 300
300
#AFBDFA
oklch(80.9% 0.088 274.3)
-
Step 400
400
#8698F7
oklch(70.6% 0.14 274.1)
-
Step 500
500
#6A7CF4
oklch(63.2% 0.179 273.7)
-
Step 600
600
#5461E2
oklch(55.6% 0.194 273.9)
-
Step 700
700
#454FC5
oklch(49.1% 0.182 273.9)
-
Step 800
800 (this color)
#404BA9
oklch(45.8% 0.15 273.9)
-
Step 900
900
#30397E
oklch(37.7% 0.116 273.9)
-
Step 950
950
#1C224A
oklch(27% 0.074 274)
#404BA9 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) | #0259AC | 0.052 |
| Deuteranopia (no green cones) | #0050A7 | 0.048 |
| Tritanopia (no blue cones) | #006172 | 0.128 |
| Achromatopsia (no color) | #555555 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404BA9
#404BA9
oklch(45.8% 0.15 273.9)
- #695600
#695600
oklch(45.9% 0.094 94)
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 #404BA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.038
- Twilight #4E518B ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.058
- Cobalt #1E488F ΔE 0.059
- Dusk Blue #26538D ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.061
- Blue Blue #2242C7 ΔE 0.063
Use #404BA9 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.