#505A8E
Closest named color: Dusky Blue (#475F94). oklch(48.3% 0.085 274.5), rgb(80, 90, 142).
Aa
White text reads best on this color (6.57:1).
About this color
#505A8E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.085 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.018 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #505A8E |
| RGB | rgb(80, 90, 142) |
| HSL | hsl(230, 28%, 44%) |
| OKLCH | oklch(48.3% 0.085 274.5) |
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 #505A8E | 6.57:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #505A8E | 3.19:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #505A8E text on white | 6.57:1 | AA | Lc 82.5 | Fine for body text |
| #505A8E text on black | 3.19:1 | AA large text | Lc -19.4 | 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 700.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E9
oklch(88.4% 0.024 275.3)
-
Step 300
300
#B8BFDC
oklch(80.9% 0.042 274.7)
-
Step 400
400
#949ECA
oklch(70.7% 0.065 274.6)
-
Step 500
500
#7A86BC
oklch(63.2% 0.083 274.2)
-
Step 600
600
#636FA9
oklch(55.7% 0.091 274.2)
-
Step 700
700 (this color)
#505A8E
oklch(48.3% 0.085 274.5)
-
Step 800
800
#434C75
oklch(42.7% 0.069 273.7)
-
Step 900
900
#393F5F
oklch(37.7% 0.055 275.3)
-
Step 950
950
#212537
oklch(26.9% 0.034 274.3)
#505A8E 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) | #486090 | 0.019 |
| Deuteranopia (no green cones) | #435B8D | 0.018 |
| Tritanopia (no blue cones) | #3C656D | 0.076 |
| Achromatopsia (no color) | #5D5D5D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505A8E
#505A8E
oklch(48.3% 0.085 274.5)
- #6E5D1D
#6E5D1D
oklch(48.2% 0.084 93.9)
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 #505A8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.018
- Dusk #4E5481 ΔE 0.025
- Twilight #4E518B ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.027
- Denim #3B638C ΔE 0.035
- Dusty Grape #545775 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.045
Use #505A8E 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.