#406BBE
Closest named color: French Blue (#436BAD). oklch(53.9% 0.139 262.2), rgb(64, 107, 190).
Aa
White text reads best on this color (5.16:1).
About this color
#406BBE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.139 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.027 away. White text reads best on it, at 5.16:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.06:1 |
| White text | 5.16:1 |
Values
| HEX | #406BBE |
| RGB | rgb(64, 107, 190) |
| HSL | hsl(220, 50%, 50%) |
| OKLCH | oklch(53.9% 0.139 262.2) |
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 #406BBE | 5.16:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #406BBE | 4.06:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #406BBE text on white | 5.16:1 | AA | Lc 75.3 | Fine for body text |
| #406BBE text on black | 4.06:1 | AA large text | Lc -26.4 | 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
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ABC1EA
oklch(80.8% 0.063 262.8)
-
Step 400
400
#7FA1DF
oklch(70.8% 0.099 262)
-
Step 500
500
#5E88D6
oklch(63.1% 0.127 261.9)
-
Step 600
600 (this color)
#406BBE
oklch(53.9% 0.139 262.2)
-
Step 700
700
#365DA9
oklch(49% 0.13 262.2)
-
Step 800
800
#2D4D89
oklch(42.8% 0.107 261.8)
-
Step 900
900
#29406D
oklch(37.6% 0.083 262.6)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#406BBE 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) | #4473C1 | 0.023 |
| Deuteranopia (no green cones) | #2F68BC | 0.019 |
| Tritanopia (no blue cones) | #007E8B | 0.114 |
| Achromatopsia (no color) | #6D6D6D | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406BBE
#406BBE
oklch(53.9% 0.139 262.2)
- #8E6700
#8E6700
oklch(53.9% 0.111 82.4)
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 #406BBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.027
- Mid Blue #276AB3 ΔE 0.029
- Windows Blue #3778BF ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.045
- Royal Blue #4169E1 ΔE 0.055
- Muted Blue #3B719F ΔE 0.056
- Nice Blue #107AB0 ΔE 0.056
- Iris #6258C4 ΔE 0.062
Use #406BBE 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.