#406CED
Closest named color: Royal Blue (#4169E1). oklch(57.4% 0.201 266), rgb(64, 108, 237).
Aa
Black text reads best on this color (4.58:1).
About this color
#406CED is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.201 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.019 away. Black text reads best on it, at 4.58:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.58:1 |
| White text | 4.57:1 |
Values
| HEX | #406CED |
| RGB | rgb(64, 108, 237) |
| HSL | hsl(225, 83%, 59%) |
| OKLCH | oklch(57.4% 0.201 266) |
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 #406CED | 4.57:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #406CED | 4.58:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #406CED text on white | 4.57:1 | AA | Lc 71.3 | Content text, not long reading |
| #406CED text on black | 4.58:1 | AA | Lc -30.4 | Non-text elements, placeholder text |
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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A5C0FC
oklch(80.9% 0.09 265.7)
-
Step 400
400
#769CFA
oklch(70.6% 0.144 266.2)
-
Step 500
500
#5480F8
oklch(63% 0.186 266.1)
-
Step 600
600 (this color)
#406CED
oklch(57.4% 0.201 266)
-
Step 700
700
#2E54C9
oklch(49.2% 0.187 265.9)
-
Step 800
800
#2645A2
oklch(42.6% 0.155 266)
-
Step 900
900
#233C81
oklch(37.8% 0.121 265.8)
-
Step 950
950
#15244B
oklch(27.1% 0.075 265.8)
#406CED 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) | #007EF1 | 0.047 |
| Deuteranopia (no green cones) | #006EEA | 0.032 |
| Tritanopia (no blue cones) | #008CA2 | 0.160 |
| Achromatopsia (no color) | #757575 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406CED
#406CED
oklch(57.4% 0.201 266)
- #977200
#977200
oklch(57.3% 0.117 85.9)
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 #406CED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.019
- Neon Blue #4361EE ΔE 0.025
- Cerulean Blue #056EEE ΔE 0.030
- Clear Blue #247AFD ΔE 0.041
- Bright Blue #0165FC ΔE 0.045
- Azul #1D5DEC ΔE 0.049
- Warm Blue #4B57DB ΔE 0.054
- Cornflower #6A79F7 ΔE 0.063
Use #406CED 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.