#406AA4
Closest named color: French Blue (#436BAD). oklch(52.1% 0.104 256.8), rgb(64, 106, 164).
Aa
White text reads best on this color (5.50:1).
About this color
#406AA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.104 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.015 away. White text reads best on it, at 5.50:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #406AA4 |
| RGB | rgb(64, 106, 164) |
| HSL | hsl(215, 44%, 45%) |
| OKLCH | oklch(52.1% 0.104 256.8) |
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 #406AA4 | 5.50:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #406AA4 | 3.81:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #406AA4 text on white | 5.50:1 | AA | Lc 77.3 | Fine for body text |
| #406AA4 text on black | 3.81:1 | AA large text | Lc -24.5 | 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 700.
-
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
#CEDAEC
oklch(88.5% 0.028 258.4)
-
Step 300
300
#ACC2E1
oklch(80.8% 0.05 257)
-
Step 400
400
#80A3D3
oklch(70.8% 0.081 256.4)
-
Step 500
500
#608BC7
oklch(63.1% 0.103 256.9)
-
Step 600
600
#4674B4
oklch(55.6% 0.112 256.9)
-
Step 700
700 (this color)
#406AA4
oklch(52.1% 0.104 256.8)
-
Step 800
800
#2E507D
oklch(42.8% 0.085 256)
-
Step 900
900
#294265
oklch(37.6% 0.068 257)
-
Step 950
950
#19273B
oklch(27% 0.042 257.3)
#406AA4 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) | #526EA6 | 0.025 |
| Deuteranopia (no green cones) | #4465A3 | 0.014 |
| Tritanopia (no blue cones) | #00777F | 0.088 |
| Achromatopsia (no color) | #696969 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406AA4
#406AA4
oklch(52.1% 0.104 256.8)
- #8A6010
#8A6010
oklch(52.1% 0.103 77.1)
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 #406AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.015
- Muted Blue #3B719F ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.025
- Mid Blue #276AB3 ΔE 0.030
- Dusky Blue #475F94 ΔE 0.036
- Dull Blue #49759C ΔE 0.040
- Denim #3B638C ΔE 0.041
- Ocean Blue #03719C ΔE 0.042
Use #406AA4 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.