#406AAC
Closest named color: French Blue (#436BAD). oklch(52.6% 0.115 259.1), rgb(64, 106, 172).
Aa
White text reads best on this color (5.41:1).
About this color
#406AAC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.115 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.005 away. White text reads best on it, at 5.41:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.87:1 |
| White text | 5.41:1 |
Values
| HEX | #406AAC |
| RGB | rgb(64, 106, 172) |
| HSL | hsl(217, 46%, 46%) |
| OKLCH | oklch(52.6% 0.115 259.1) |
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 #406AAC | 5.41:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #406AAC | 3.87:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #406AAC text on white | 5.41:1 | AA | Lc 76.8 | Fine for body text |
| #406AAC text on black | 3.87:1 | AA large text | Lc -24.9 | 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
#ADC2E3
oklch(80.9% 0.052 259.4)
-
Step 400
400
#82A2D4
oklch(70.7% 0.082 259.2)
-
Step 500
500
#628AC9
oklch(63.1% 0.106 259.2)
-
Step 600
600 (this color)
#406AAC
oklch(52.6% 0.115 259.1)
-
Step 700
700
#3A609D
oklch(49.1% 0.108 259.5)
-
Step 800
800
#304F7F
oklch(42.8% 0.088 258.9)
-
Step 900
900
#2B4266
oklch(37.8% 0.068 259.1)
-
Step 950
950
#19273C
oklch(27.1% 0.044 258.3)
#406AAC 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) | #4D6FAF | 0.022 |
| Deuteranopia (no green cones) | #3E65AB | 0.014 |
| Tritanopia (no blue cones) | #007983 | 0.096 |
| Achromatopsia (no color) | #6A6A6A | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406AAC
#406AAC
oklch(52.6% 0.115 259.1)
- #8C6200
#8C6200
oklch(52.7% 0.109 79.3)
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 #406AAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.005
- Mid Blue #276AB3 ΔE 0.023
- Flat Blue #3C73A8 ΔE 0.028
- Muted Blue #3B719F ΔE 0.032
- Windows Blue #3778BF ΔE 0.044
- Dusky Blue #475F94 ΔE 0.044
- Dull Blue #49759C ΔE 0.047
- Nice Blue #107AB0 ΔE 0.049
Use #406AAC 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.