#506BC0
Closest named color: French Blue (#436BAD). oklch(54.9% 0.136 268.4), rgb(80, 107, 192).
Aa
White text reads best on this color (4.99:1).
About this color
#506BC0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.136 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.034 away. White text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.20:1 |
| White text | 4.99:1 |
Values
| HEX | #506BC0 |
| RGB | rgb(80, 107, 192) |
| HSL | hsl(226, 47%, 53%) |
| OKLCH | oklch(54.9% 0.136 268.4) |
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 #506BC0 | 4.99:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #506BC0 | 4.20:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #506BC0 text on white | 4.99:1 | AA | Lc 74.3 | Content text, not long reading |
| #506BC0 text on black | 4.20:1 | AA large text | Lc -27.4 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B0C0E9
oklch(80.9% 0.061 268.3)
-
Step 400
400
#879EDE
oklch(70.7% 0.098 268.7)
-
Step 500
500
#6A85D5
oklch(63.1% 0.125 268.6)
-
Step 600
600 (this color)
#506BC0
oklch(54.9% 0.136 268.4)
-
Step 700
700
#435BA8
oklch(49.2% 0.126 268.5)
-
Step 800
800
#374B88
oklch(42.8% 0.104 268.1)
-
Step 900
900
#2F3F6D
oklch(37.8% 0.082 267.9)
-
Step 950
950
#1C2540
oklch(27.1% 0.052 268.8)
#506BC0 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) | #4575C3 | 0.027 |
| Deuteranopia (no green cones) | #356BBE | 0.028 |
| Tritanopia (no blue cones) | #007E8C | 0.121 |
| Achromatopsia (no color) | #6F6F6F | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506BC0
#506BC0
oklch(54.9% 0.136 268.4)
- #8C6C00
#8C6C00
oklch(54.8% 0.112 88.1)
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 #506BC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.034
- Windows Blue #3778BF ΔE 0.040
- Mid Blue #276AB3 ΔE 0.045
- Dark Periwinkle #665FD1 ΔE 0.050
- Flat Blue #3C73A8 ΔE 0.052
- Iris #6258C4 ΔE 0.052
- Royal Blue #4169E1 ΔE 0.054
- Slate Blue #6A5ACD ΔE 0.058
Use #506BC0 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.