#505C87
Closest named color: Dusky Blue (#475F94). oklch(48.3% 0.071 271.6), rgb(80, 92, 135).
Aa
White text reads best on this color (6.51:1).
About this color
#505C87 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.071 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.023 away. White text reads best on it, at 6.51:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.22:1 |
| White text | 6.51:1 |
Values
| HEX | #505C87 |
| RGB | rgb(80, 92, 135) |
| HSL | hsl(227, 26%, 42%) |
| OKLCH | oklch(48.3% 0.071 271.6) |
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 #505C87 | 6.51:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #505C87 | 3.22:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #505C87 text on white | 6.51:1 | AA | Lc 82.3 | Fine for body text |
| #505C87 text on black | 3.22:1 | AA large text | Lc -19.6 | 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 700.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B8C0D8
oklch(80.9% 0.035 271)
-
Step 400
400
#949FC4
oklch(70.7% 0.056 272)
-
Step 500
500
#7A87B5
oklch(63.1% 0.071 272)
-
Step 600
600
#6371A1
oklch(55.7% 0.077 271.3)
-
Step 700
700 (this color)
#505C87
oklch(48.3% 0.071 271.6)
-
Step 800
800
#434D70
oklch(42.7% 0.06 271.5)
-
Step 900
900
#39405A
oklch(37.7% 0.046 272.4)
-
Step 950
950
#212635
oklch(27.1% 0.029 270.1)
#505C87 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) | #4E6089 | 0.011 |
| Deuteranopia (no green cones) | #495C86 | 0.010 |
| Tritanopia (no blue cones) | #3F656B | 0.065 |
| Achromatopsia (no color) | #5E5E5E | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505C87
#505C87
oklch(48.3% 0.071 271.6)
- #6D5D2C
#6D5D2C
oklch(48.3% 0.071 91.5)
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 #505C87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.023
- Dusk #4E5481 ΔE 0.024
- Dusty Grape #545775 ΔE 0.029
- Denim #3B638C ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.035
- Twilight #4E518B ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.042
Use #505C87 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.