#5573E5
Closest named color: Royal Blue (#4169E1). oklch(59.2% 0.176 269.3), rgb(85, 115, 229).
Aa
Black text reads best on this color (4.96:1).
About this color
#5573E5 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.176 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.036 away. Black text reads best on it, at 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.96:1 |
| White text | 4.22:1 |
Values
| HEX | #5573E5 |
| RGB | rgb(85, 115, 229) |
| HSL | hsl(228, 73%, 62%) |
| OKLCH | oklch(59.2% 0.176 269.3) |
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 #5573E5 | 4.22:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #5573E5 | 4.96:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #5573E5 text on white | 4.22:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #5573E5 text on black | 4.96:1 | AA | Lc -32.8 | Non-text elements, placeholder text |
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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ACBFF5
oklch(80.9% 0.079 269.5)
-
Step 400
400
#819CF0
oklch(70.7% 0.127 269.4)
-
Step 500
500
#6381EA
oklch(63.1% 0.161 269.4)
-
Step 600
600 (this color)
#5573E5
oklch(59.2% 0.176 269.3)
-
Step 700
700
#3D55BC
oklch(49% 0.164 269.5)
-
Step 800
800
#324798
oklch(42.8% 0.135 269.1)
-
Step 900
900
#2B3C79
oklch(37.7% 0.106 269.1)
-
Step 950
950
#192447
oklch(27.1% 0.067 268.5)
#5573E5 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) | #3482E9 | 0.043 |
| Deuteranopia (no green cones) | #0875E3 | 0.050 |
| Tritanopia (no blue cones) | #008DA1 | 0.148 |
| Achromatopsia (no color) | #7B7B7B | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5573E5
#5573E5
oklch(59.2% 0.176 269.3)
- #9B7900
#9B7900
oklch(59.2% 0.121 88.9)
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 #5573E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.036
- Cornflower #6A79F7 ΔE 0.041
- Clear Blue #247AFD ΔE 0.051
- Neon Blue #4361EE ΔE 0.053
- Dark Periwinkle #665FD1 ΔE 0.056
- Medium Slate Blue #7B68EE ΔE 0.056
- Cerulean Blue #056EEE ΔE 0.057
- Soft Blue #6488EA ΔE 0.059
Use #5573E5 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.