#506AA4
Closest named color: French Blue (#436BAD). oklch(53% 0.097 265), rgb(80, 106, 164).
Aa
White text reads best on this color (5.33:1).
About this color
#506AA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.097 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.019 away. White text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #506AA4 |
| RGB | rgb(80, 106, 164) |
| HSL | hsl(221, 34%, 48%) |
| OKLCH | oklch(53% 0.097 265) |
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 #506AA4 | 5.33:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #506AA4 | 3.93:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #506AA4 text on white | 5.33:1 | AA | Lc 76.4 | Fine for body text |
| #506AA4 text on black | 3.93:1 | AA large text | Lc -25.3 | 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
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B3C1DE
oklch(81% 0.044 264.9)
-
Step 400
400
#8BA0CD
oklch(70.6% 0.07 265.2)
-
Step 500
500
#6F88C0
oklch(63% 0.09 265.5)
-
Step 600
600 (this color)
#506AA4
oklch(53% 0.097 265)
-
Step 700
700
#475F94
oklch(49.1% 0.09 264.8)
-
Step 800
800
#3B4E78
oklch(42.8% 0.074 264.9)
-
Step 900
900
#324161
oklch(37.7% 0.059 264.6)
-
Step 950
950
#1E2639
oklch(27% 0.037 266.4)
#506AA4 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) | #546FA6 | 0.016 |
| Deuteranopia (no green cones) | #4A67A3 | 0.012 |
| Tritanopia (no blue cones) | #2A767F | 0.086 |
| Achromatopsia (no color) | #6B6B6B | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506AA4
#506AA4
oklch(53% 0.097 265)
- #85671C
#85671C
oklch(53% 0.097 85.7)
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 #506AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.019
- Flat Blue #3C73A8 ΔE 0.030
- Muted Blue #3B719F ΔE 0.031
- Dull Blue #49759C ΔE 0.038
- Dusky Blue #475F94 ΔE 0.040
- Mid Blue #276AB3 ΔE 0.044
- Metallic Blue #4F738E ΔE 0.050
- Denim #3B638C ΔE 0.050
Use #506AA4 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.