#406EA5
Closest named color: Flat Blue (#3C73A8). oklch(53.1% 0.101 253.9), rgb(64, 110, 165).
Aa
White text reads best on this color (5.26:1).
About this color
#406EA5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.101 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.014 away. White text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 3.99:1 |
| White text | 5.26:1 |
Values
| HEX | #406EA5 |
| RGB | rgb(64, 110, 165) |
| HSL | hsl(213, 44%, 45%) |
| OKLCH | oklch(53.1% 0.101 253.9) |
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 #406EA5 | 5.26:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #406EA5 | 3.99:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #406EA5 text on white | 5.26:1 | AA | Lc 76.0 | Fine for body text |
| #406EA5 text on black | 3.99:1 | AA large text | Lc -25.8 | 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
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CEDAEA
oklch(88.4% 0.026 255.6)
-
Step 300
300
#ADC3DE
oklch(80.9% 0.045 253.6)
-
Step 400
400
#81A3CD
oklch(70.6% 0.072 254)
-
Step 500
500
#618CC1
oklch(63.1% 0.093 254.2)
-
Step 600
600 (this color)
#406EA5
oklch(53.1% 0.101 253.9)
-
Step 700
700
#386295
oklch(49% 0.095 254.3)
-
Step 800
800
#2F5179
oklch(42.8% 0.078 253.5)
-
Step 900
900
#2A4361
oklch(37.7% 0.06 253.7)
-
Step 950
950
#192739
oklch(26.9% 0.039 255.1)
#406EA5 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) | #5771A7 | 0.029 |
| Deuteranopia (no green cones) | #4968A4 | 0.018 |
| Tritanopia (no blue cones) | #007B82 | 0.085 |
| Achromatopsia (no color) | #6C6C6C | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406EA5
#406EA5
oklch(53.1% 0.101 253.9)
- #8E621B
#8E621B
oklch(53% 0.101 74.4)
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 #406EA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.014
- Muted Blue #3B719F ΔE 0.015
- French Blue #436BAD ΔE 0.017
- Dull Blue #49759C ΔE 0.030
- Mid Blue #276AB3 ΔE 0.034
- Ocean Blue #03719C ΔE 0.039
- Nice Blue #107AB0 ΔE 0.040
- Windows Blue #3778BF ΔE 0.044
Use #406EA5 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.