#506CA4
Closest named color: French Blue (#436BAD). oklch(53.5% 0.094 263.3), rgb(80, 108, 164).
Aa
White text reads best on this color (5.22:1).
About this color
#506CA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.094 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.021 away. White text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.02:1 |
| White text | 5.22:1 |
Values
| HEX | #506CA4 |
| RGB | rgb(80, 108, 164) |
| HSL | hsl(220, 34%, 48%) |
| OKLCH | oklch(53.5% 0.094 263.3) |
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 #506CA4 | 5.22:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #506CA4 | 4.02:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #506CA4 text on white | 5.22:1 | AA | Lc 75.8 | Fine for body text |
| #506CA4 text on black | 4.02:1 | AA large text | Lc -25.9 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B2C1DD
oklch(80.9% 0.043 263)
-
Step 400
400
#8BA1CC
oklch(70.8% 0.068 263.6)
-
Step 500
500
#6E89BF
oklch(63.1% 0.088 263.6)
-
Step 600
600 (this color)
#506CA4
oklch(53.5% 0.094 263.3)
-
Step 700
700
#466093
oklch(49.2% 0.088 263)
-
Step 800
800
#3A4E77
oklch(42.7% 0.073 263.8)
-
Step 900
900
#324160
oklch(37.7% 0.057 264.1)
-
Step 950
950
#1D2638
oklch(26.9% 0.036 263.7)
#506CA4 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) | #5671A6 | 0.017 |
| Deuteranopia (no green cones) | #4D69A3 | 0.010 |
| Tritanopia (no blue cones) | #2A7880 | 0.085 |
| Achromatopsia (no color) | #6C6C6C | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506CA4
#506CA4
oklch(53.5% 0.094 263.3)
- #876822
#876822
oklch(53.5% 0.094 84)
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 #506CA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.021
- Flat Blue #3C73A8 ΔE 0.026
- Muted Blue #3B719F ΔE 0.028
- Dull Blue #49759C ΔE 0.032
- Dusky Blue #475F94 ΔE 0.044
- Metallic Blue #4F738E ΔE 0.046
- Mid Blue #276AB3 ΔE 0.046
- Cerulean #457B9D ΔE 0.048
Use #506CA4 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.