#506EA4
Closest named color: Flat Blue (#3C73A8). oklch(53.9% 0.092 261.6), rgb(80, 110, 164).
Aa
White text reads best on this color (5.11:1).
About this color
#506EA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.092 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.023 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #506EA4 |
| RGB | rgb(80, 110, 164) |
| HSL | hsl(219, 34%, 48%) |
| OKLCH | oklch(53.9% 0.092 261.6) |
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 #506EA4 | 5.11:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #506EA4 | 4.10:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #506EA4 text on white | 5.11:1 | AA | Lc 75.2 | Fine for body text |
| #506EA4 text on black | 4.10:1 | AA large text | Lc -26.6 | 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
#D1DAE9
oklch(88.6% 0.023 260.7)
-
Step 300
300
#B2C1DC
oklch(80.8% 0.042 262.3)
-
Step 400
400
#8AA1CB
oklch(70.7% 0.067 262.3)
-
Step 500
500
#6D8ABD
oklch(63.2% 0.084 261.4)
-
Step 600
600 (this color)
#506EA4
oklch(53.9% 0.092 261.6)
-
Step 700
700
#456091
oklch(49% 0.086 261.7)
-
Step 800
800
#394F76
oklch(42.8% 0.071 261.4)
-
Step 900
900
#31425F
oklch(37.8% 0.055 260.8)
-
Step 950
950
#1D2738
oklch(27.2% 0.035 260.8)
#506EA4 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) | #5972A6 | 0.017 |
| Deuteranopia (no green cones) | #4F6AA3 | 0.012 |
| Tritanopia (no blue cones) | #297A81 | 0.084 |
| Achromatopsia (no color) | #6E6E6E | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506EA4
#506EA4
oklch(53.9% 0.092 261.6)
- #896827
#896827
oklch(53.8% 0.092 81.3)
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 #506EA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.023
- French Blue #436BAD ΔE 0.024
- Muted Blue #3B719F ΔE 0.025
- Dull Blue #49759C ΔE 0.027
- Metallic Blue #4F738E ΔE 0.042
- Cerulean #457B9D ΔE 0.043
- Stormy Blue #507B9C ΔE 0.043
- Windows Blue #3778BF ΔE 0.048
Use #506EA4 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.