#505BA0
Closest named color: Dusky Blue (#475F94). oklch(49.5% 0.111 274.8), rgb(80, 91, 160).
Aa
White text reads best on this color (6.27:1).
About this color
#505BA0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.111 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.027 away. White text reads best on it, at 6.27:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.34:1 |
| White text | 6.27:1 |
Values
| HEX | #505BA0 |
| RGB | rgb(80, 91, 160) |
| HSL | hsl(232, 33%, 47%) |
| OKLCH | oklch(49.5% 0.111 274.8) |
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 #505BA0 | 6.27:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #505BA0 | 3.34:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #505BA0 text on white | 6.27:1 | AA | Lc 81.1 | Fine for body text |
| #505BA0 text on black | 3.34:1 | AA large text | Lc -20.7 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE4
oklch(81% 0.053 274.4)
-
Step 400
400
#919DD6
oklch(70.8% 0.085 274.9)
-
Step 500
500
#7683CB
oklch(63% 0.109 275)
-
Step 600
600
#5F6CB8
oklch(55.6% 0.119 274.6)
-
Step 700
700 (this color)
#505BA0
oklch(49.5% 0.111 274.8)
-
Step 800
800
#414A81
oklch(42.8% 0.092 274.9)
-
Step 900
900
#373E67
oklch(37.8% 0.071 275.1)
-
Step 950
950
#20243C
oklch(26.9% 0.045 275.7)
#505BA0 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) | #3F64A3 | 0.030 |
| Deuteranopia (no green cones) | #385D9E | 0.030 |
| Tritanopia (no blue cones) | #306A76 | 0.098 |
| Achromatopsia (no color) | #606060 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505BA0
#505BA0
oklch(49.5% 0.111 274.8)
- #746000
#746000
oklch(49.4% 0.101 94.7)
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 #505BA0, closest first.
No curated palette has a color within ΔE 0.04 of #505BA0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.036
- Twilight #4E518B ΔE 0.040
- French Blue #436BAD ΔE 0.045
- Denim #3B638C ΔE 0.050
- Dusk #4E5481 ΔE 0.051
- Mid Blue #276AB3 ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.058
Use #505BA0 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.