#506FAE
Closest named color: French Blue (#436BAD). oklch(54.7% 0.105 263.4), rgb(80, 111, 174).
Aa
White text reads best on this color (4.96:1).
About this color
#506FAE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.105 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.020 away. White text reads best on it, at 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.22:1 |
| White text | 4.96:1 |
Values
| HEX | #506FAE |
| RGB | rgb(80, 111, 174) |
| HSL | hsl(220, 37%, 50%) |
| OKLCH | oklch(54.7% 0.105 263.4) |
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 #506FAE | 4.96:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #506FAE | 4.22:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #506FAE text on white | 4.96:1 | AA | Lc 74.3 | Content text, not long reading |
| #506FAE text on black | 4.22:1 | AA large text | Lc -27.5 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0D9EB
oklch(88.4% 0.027 264.4)
-
Step 300
300
#B1C1E0
oklch(80.9% 0.047 263.7)
-
Step 400
400
#88A1D1
oklch(70.8% 0.076 263.2)
-
Step 500
500
#6B89C4
oklch(63.2% 0.096 263.2)
-
Step 600
600 (this color)
#506FAE
oklch(54.7% 0.105 263.4)
-
Step 700
700
#435F98
oklch(49.1% 0.098 263.4)
-
Step 800
800
#374E7B
oklch(42.7% 0.08 262.9)
-
Step 900
900
#304163
oklch(37.7% 0.063 263.4)
-
Step 950
950
#1C263A
oklch(26.9% 0.04 263.6)
#506FAE 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) | #5674B1 | 0.017 |
| Deuteranopia (no green cones) | #4B6CAD | 0.011 |
| Tritanopia (no blue cones) | #1E7D86 | 0.095 |
| Achromatopsia (no color) | #707070 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506FAE
#506FAE
oklch(54.7% 0.105 263.4)
- #8E6A15
#8E6A15
oklch(54.7% 0.105 83.2)
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 #506FAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.020
- Flat Blue #3C73A8 ΔE 0.026
- Muted Blue #3B719F ΔE 0.035
- Windows Blue #3778BF ΔE 0.037
- Dull Blue #49759C ΔE 0.038
- Mid Blue #276AB3 ΔE 0.044
- Nice Blue #107AB0 ΔE 0.050
- Cerulean #457B9D ΔE 0.050
Use #506FAE 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.