#406DAF
Closest named color: French Blue (#436BAD). oklch(53.4% 0.116 257.9), rgb(64, 109, 175).
Aa
White text reads best on this color (5.21:1).
About this color
#406DAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.116 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.006 away. White text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #406DAF |
| RGB | rgb(64, 109, 175) |
| HSL | hsl(216, 46%, 47%) |
| OKLCH | oklch(53.4% 0.116 257.9) |
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 #406DAF | 5.21:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #406DAF | 4.02:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #406DAF text on white | 5.21:1 | AA | Lc 75.7 | Fine for body text |
| #406DAF 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#ACC2E3
oklch(80.8% 0.053 258.4)
-
Step 400
400
#80A2D5
oklch(70.6% 0.084 258.3)
-
Step 500
500
#608BC9
oklch(63.2% 0.105 257.5)
-
Step 600
600 (this color)
#406DAF
oklch(53.4% 0.116 257.9)
-
Step 700
700
#38619D
oklch(49.2% 0.107 257.9)
-
Step 800
800
#2E4F7F
oklch(42.7% 0.089 257.8)
-
Step 900
900
#294266
oklch(37.7% 0.069 257.5)
-
Step 950
950
#19273C
oklch(27.1% 0.044 258.3)
#406DAF 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) | #5072B2 | 0.024 |
| Deuteranopia (no green cones) | #4168AE | 0.014 |
| Tritanopia (no blue cones) | #007C85 | 0.097 |
| Achromatopsia (no color) | #6C6C6C | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406DAF
#406DAF
oklch(53.4% 0.116 257.9)
- #906300
#906300
oklch(53.4% 0.111 77.6)
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 #406DAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.006
- Flat Blue #3C73A8 ΔE 0.023
- Mid Blue #276AB3 ΔE 0.025
- Muted Blue #3B719F ΔE 0.031
- Windows Blue #3778BF ΔE 0.035
- Nice Blue #107AB0 ΔE 0.043
- Dull Blue #49759C ΔE 0.044
- Ocean Blue #03719C ΔE 0.050
Use #406DAF 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.