#404AA3
Closest named color: Blueberry (#464196). oklch(45.1% 0.142 274.4), rgb(64, 74, 163).
Aa
White text reads best on this color (7.70:1).
About this color
#404AA3 is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.142 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.030 away. White text reads best on it, at 7.70:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.72:1 |
| White text | 7.70:1 |
Values
| HEX | #404AA3 |
| RGB | rgb(64, 74, 163) |
| HSL | hsl(234, 44%, 45%) |
| OKLCH | oklch(45.1% 0.142 274.4) |
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 #404AA3 | 7.70:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #404AA3 | 2.72:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #404AA3 text on white | 7.70:1 | AAA | Lc 86.4 | Fine for body text |
| #404AA3 text on black | 2.72:1 | Fails | Lc -15.6 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD8F9
oklch(88.6% 0.047 273.4)
-
Step 300
300
#B0BDF7
oklch(80.9% 0.083 274.6)
-
Step 400
400
#8899F3
oklch(70.7% 0.133 274.4)
-
Step 500
500
#6C7DEF
oklch(63.2% 0.17 274.1)
-
Step 600
600
#5663DD
oklch(55.7% 0.184 274.2)
-
Step 700
700
#4751C0
oklch(49.2% 0.172 274.3)
-
Step 800
800 (this color)
#404AA3
oklch(45.1% 0.142 274.4)
-
Step 900
900
#31397B
oklch(37.6% 0.111 274.5)
-
Step 950
950
#1D2248
oklch(27% 0.07 275)
#404AA3 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) | #0F57A6 | 0.049 |
| Deuteranopia (no green cones) | #004FA1 | 0.049 |
| Tritanopia (no blue cones) | #005F6F | 0.124 |
| Achromatopsia (no color) | #535353 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404AA3
#404AA3
oklch(45.1% 0.142 274.4)
- #665400
#665400
oklch(45.1% 0.092 94.6)
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 #404AA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.030
- Dark Slate Blue #483D8B ΔE 0.049
- Twilight #4E518B ΔE 0.051
- Cobalt #1E488F ΔE 0.052
- Dusk Blue #26538D ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.058
- Sapphire #2138AB ΔE 0.064
- Dusky Blue #475F94 ΔE 0.068
Use #404AA3 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.