#406BB9
Closest named color: French Blue (#436BAD). oklch(53.6% 0.132 261.3), rgb(64, 107, 185).
Aa
White text reads best on this color (5.22:1).
About this color
#406BB9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.132 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.019 away. White text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.02:1 |
| White text | 5.22:1 |
Values
| HEX | #406BB9 |
| RGB | rgb(64, 107, 185) |
| HSL | hsl(219, 49%, 49%) |
| OKLCH | oklch(53.6% 0.132 261.3) |
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 #406BB9 | 5.22:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #406BB9 | 4.02:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #406BB9 text on white | 5.22:1 | AA | Lc 75.7 | Fine for body text |
| #406BB9 text on black | 4.02:1 | AA large text | Lc -26.1 | 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 600.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CDDAF0
oklch(88.5% 0.033 261)
-
Step 300
300
#ACC2E8
oklch(81% 0.059 261.3)
-
Step 400
400
#7FA1DC
oklch(70.7% 0.095 261.1)
-
Step 500
500
#5F89D2
oklch(63.2% 0.12 260.9)
-
Step 600
600 (this color)
#406BB9
oklch(53.6% 0.132 261.3)
-
Step 700
700
#375EA5
oklch(49% 0.122 261.4)
-
Step 800
800
#2E4D86
oklch(42.6% 0.102 261.6)
-
Step 900
900
#29416B
oklch(37.7% 0.078 260.9)
-
Step 950
950
#18263F
oklch(27% 0.051 261.4)
#406BB9 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) | #4772BC | 0.022 |
| Deuteranopia (no green cones) | #3467B7 | 0.017 |
| Tritanopia (no blue cones) | #007D89 | 0.109 |
| Achromatopsia (no color) | #6C6C6C | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406BB9
#406BB9
oklch(53.6% 0.132 261.3)
- #8E6500
#8E6500
oklch(53.5% 0.111 80.7)
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 #406BB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.019
- Mid Blue #276AB3 ΔE 0.024
- Windows Blue #3778BF ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.039
- Muted Blue #3B719F ΔE 0.049
- Nice Blue #107AB0 ΔE 0.052
- Dull Blue #49759C ΔE 0.060
- Dusky Blue #475F94 ΔE 0.062
Use #406BB9 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.