#406FAF
Closest named color: French Blue (#436BAD). oklch(53.9% 0.113 256.6), rgb(64, 111, 175).
Aa
White text reads best on this color (5.10:1).
About this color
#406FAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.113 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.011 away. White text reads best on it, at 5.10:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.11:1 |
| White text | 5.10:1 |
Values
| HEX | #406FAF |
| RGB | rgb(64, 111, 175) |
| HSL | hsl(215, 46%, 47%) |
| OKLCH | oklch(53.9% 0.113 256.6) |
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 #406FAF | 5.10:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #406FAF | 4.11:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #406FAF text on white | 5.10:1 | AA | Lc 75.0 | Fine for body text |
| #406FAF text on black | 4.11:1 | AA large text | Lc -26.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAEC
oklch(88.4% 0.029 256.5)
-
Step 300
300
#ACC3E2
oklch(81% 0.051 255.9)
-
Step 400
400
#80A3D3
oklch(70.8% 0.081 256.4)
-
Step 500
500
#5F8BC8
oklch(63.1% 0.105 256.7)
-
Step 600
600 (this color)
#406FAF
oklch(53.9% 0.113 256.6)
-
Step 700
700
#36619B
oklch(49% 0.105 256.4)
-
Step 800
800
#2E507E
oklch(42.8% 0.087 256.4)
-
Step 900
900
#294265
oklch(37.6% 0.068 257)
-
Step 950
950
#18273B
oklch(27% 0.043 255.9)
#406FAF 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) | #5374B2 | 0.027 |
| Deuteranopia (no green cones) | #4469AE | 0.017 |
| Tritanopia (no blue cones) | #007E87 | 0.094 |
| Achromatopsia (no color) | #6E6E6E | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406FAF
#406FAF
oklch(53.9% 0.113 256.6)
- #936400
#936400
oklch(53.9% 0.113 76.6)
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 #406FAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.011
- Flat Blue #3C73A8 ΔE 0.018
- Mid Blue #276AB3 ΔE 0.028
- Muted Blue #3B719F ΔE 0.028
- Windows Blue #3778BF ΔE 0.031
- Nice Blue #107AB0 ΔE 0.038
- Dull Blue #49759C ΔE 0.040
- Ocean Blue #03719C ΔE 0.049
Use #406FAF 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.