#506CA5
Closest named color: French Blue (#436BAD). oklch(53.5% 0.096 263.6), rgb(80, 108, 165).
Aa
White text reads best on this color (5.21:1).
About this color
#506CA5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.096 and its hue 264°. 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 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #506CA5 |
| RGB | rgb(80, 108, 165) |
| HSL | hsl(220, 35%, 48%) |
| OKLCH | oklch(53.5% 0.096 263.6) |
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 #506CA5 | 5.21:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #506CA5 | 4.02:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #506CA5 text on white | 5.21:1 | AA | Lc 75.7 | Fine for body text |
| #506CA5 text on black | 4.02:1 | AA large text | Lc -26.0 | 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
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B2C1DD
oklch(80.9% 0.043 263)
-
Step 400
400
#8AA1CC
oklch(70.7% 0.068 262.8)
-
Step 500
500
#6E89BF
oklch(63.1% 0.088 263.6)
-
Step 600
600 (this color)
#506CA5
oklch(53.5% 0.096 263.6)
-
Step 700
700
#466093
oklch(49.2% 0.088 263)
-
Step 800
800
#3A4E78
oklch(42.7% 0.075 264.1)
-
Step 900
900
#324160
oklch(37.7% 0.057 264.1)
-
Step 950
950
#1D2638
oklch(26.9% 0.036 263.7)
#506CA5 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) | #5671A7 | 0.017 |
| Deuteranopia (no green cones) | #4C69A4 | 0.010 |
| Tritanopia (no blue cones) | #297881 | 0.085 |
| Achromatopsia (no color) | #6D6D6D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506CA5
#506CA5
oklch(53.5% 0.096 263.6)
- #886820
#886820
oklch(53.6% 0.096 83.7)
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 #506CA5, 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 0.028
- Dull Blue #49759C ΔE 0.033
- Dusky Blue #475F94 ΔE 0.045
- Mid Blue #276AB3 ΔE 0.045
- Metallic Blue #4F738E ΔE 0.047
- Cerulean #457B9D ΔE 0.049
Use #506CA5 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.