#406CD5
Closest named color: Royal Blue (#4169E1). oklch(55.7% 0.169 264.5), rgb(64, 108, 213).
Aa
White text reads best on this color (4.85:1).
About this color
#406CD5 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.169 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.021 away. White text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #406CD5 |
| RGB | rgb(64, 108, 213) |
| HSL | hsl(222, 64%, 54%) |
| OKLCH | oklch(55.7% 0.169 264.5) |
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 #406CD5 | 4.85:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #406CD5 | 4.32:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #406CD5 text on white | 4.85:1 | AA | Lc 73.3 | Content text, not long reading |
| #406CD5 text on black | 4.32:1 | AA large text | Lc -28.4 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBD9F6
oklch(88.4% 0.043 265)
-
Step 300
300
#A8C1F3
oklch(81% 0.076 264)
-
Step 400
400
#7A9FED
oklch(70.8% 0.122 264.2)
-
Step 500
500
#5985E7
oklch(63.2% 0.155 264.2)
-
Step 600
600 (this color)
#406CD5
oklch(55.7% 0.169 264.5)
-
Step 700
700
#3259B8
oklch(49% 0.157 264.5)
-
Step 800
800
#2A4A95
oklch(42.8% 0.129 264.3)
-
Step 900
900
#263E77
oklch(37.7% 0.102 264.8)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#406CD5 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) | #3079D9 | 0.034 |
| Deuteranopia (no green cones) | #006BD3 | 0.035 |
| Tritanopia (no blue cones) | #008596 | 0.137 |
| Achromatopsia (no color) | #717171 | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406CD5
#406CD5
oklch(55.7% 0.169 264.5)
- #926D00
#926D00
oklch(55.7% 0.114 85)
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 #406CD5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.021
- Cerulean Blue #056EEE ΔE 0.047
- Neon Blue #4361EE ΔE 0.048
- Windows Blue #3778BF ΔE 0.051
- Warm Blue #4B57DB ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.059
- Azul #1D5DEC ΔE 0.061
Use #406CD5 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.