#505AD0
Closest named color: Warm Blue (#4B57DB). oklch(52.7% 0.18 274.7), rgb(80, 90, 208).
Aa
White text reads best on this color (5.65:1).
About this color
#505AD0 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.180 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.020 away. White text reads best on it, at 5.65:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.71:1 |
| White text | 5.65:1 |
Values
| HEX | #505AD0 |
| RGB | rgb(80, 90, 208) |
| HSL | hsl(235, 58%, 56%) |
| OKLCH | oklch(52.7% 0.18 274.7) |
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 #505AD0 | 5.65:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #505AD0 | 3.71:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #505AD0 text on white | 5.65:1 | AA | Lc 77.9 | Fine for body text |
| #505AD0 text on black | 3.71:1 | AA large text | Lc -23.9 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F8
oklch(88.6% 0.045 274.4)
-
Step 300
300
#B1BDF5
oklch(80.9% 0.08 275.1)
-
Step 400
400
#8999F1
oklch(70.7% 0.13 274.8)
-
Step 500
500
#6E7DEC
oklch(63.1% 0.166 274.8)
-
Step 600
600 (this color)
#505AD0
oklch(52.7% 0.18 274.7)
-
Step 700
700
#4851BD
oklch(49% 0.168 274.8)
-
Step 800
800
#3B4399
oklch(42.6% 0.139 274.9)
-
Step 900
900
#323A7A
oklch(37.8% 0.108 274.7)
-
Step 950
950
#1D2247
oklch(26.9% 0.068 275)
#505AD0 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) | #006DD4 | 0.064 |
| Deuteranopia (no green cones) | #0062CE | 0.057 |
| Tritanopia (no blue cones) | #00768C | 0.153 |
| Achromatopsia (no color) | #676767 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505AD0
#505AD0
oklch(52.7% 0.18 274.7)
- #7F6900
#7F6900
oklch(52.7% 0.108 94.5)
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 #505AD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.020
- Iris #6258C4 ΔE 0.031
- Dark Periwinkle #665FD1 ΔE 0.035
- Slate Blue #6A5ACD ΔE 0.038
- Light Indigo #6D5ACF ΔE 0.043
- Royal Blue #4169E1 ΔE 0.044
- Neon Blue #4361EE ΔE 0.049
- Bluey Purple #6241C7 ΔE 0.059
Use #505AD0 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.