#406EBC
Closest named color: French Blue (#436BAD). oklch(54.4% 0.132 260.3), rgb(64, 110, 188).
Aa
White text reads best on this color (5.03:1).
About this color
#406EBC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.132 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.023 away. White text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.17:1 |
| White text | 5.03:1 |
Values
| HEX | #406EBC |
| RGB | rgb(64, 110, 188) |
| HSL | hsl(218, 49%, 49%) |
| OKLCH | oklch(54.4% 0.132 260.3) |
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 #406EBC | 5.03:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #406EBC | 4.17:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #406EBC text on white | 5.03:1 | AA | Lc 74.5 | Content text, not long reading |
| #406EBC text on black | 4.17:1 | AA large text | Lc -27.2 | 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 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
#CDDAF0
oklch(88.5% 0.033 261)
-
Step 300
300
#ABC2E8
oklch(81% 0.06 260.4)
-
Step 400
400
#7EA1DC
oklch(70.6% 0.095 260.6)
-
Step 500
500
#5D89D3
oklch(63.1% 0.122 260.3)
-
Step 600
600 (this color)
#406EBC
oklch(54.4% 0.132 260.3)
-
Step 700
700
#355FA6
oklch(49.2% 0.123 260.2)
-
Step 800
800
#2C4E86
oklch(42.8% 0.101 259.9)
-
Step 900
900
#28416B
oklch(37.7% 0.079 260.2)
-
Step 950
950
#18263F
oklch(27% 0.051 261.4)
#406EBC 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) | #4A75BF | 0.023 |
| Deuteranopia (no green cones) | #376ABA | 0.015 |
| Tritanopia (no blue cones) | #00808C | 0.108 |
| Achromatopsia (no color) | #6F6F6F | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406EBC
#406EBC
oklch(54.4% 0.132 260.3)
- #926700
#926700
oklch(54.4% 0.113 79.9)
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 #406EBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.023
- Windows Blue #3778BF ΔE 0.027
- Mid Blue #276AB3 ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.038
- Nice Blue #107AB0 ΔE 0.049
- Muted Blue #3B719F ΔE 0.049
- Dull Blue #49759C ΔE 0.059
- Royal Blue #4169E1 ΔE 0.060
Use #406EBC 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.